Programmieren lernen mit Java GERMAN

Erwin Merker Roman Merker

Programmieren lernen mit JAVA

Aus dem Bereich IT erfolgreich lernen

Lexikon für IT-Berufe von Peter Fetzer und Bettina Schneider Grundkurs IT-Berufe von Andreas M. Böhm und Bettina Jungkunz Java für IT-Berufe von Wolf-Gert Matthäus Prüfungsvorbereitung für IT-Berufe von Manfred Wünsche Grundlegende Algorithmen von Volker Heun Algorithmen für Ingenieure – realisiert mit Visual Basic von Harald Nahrstedt Grundkurs Programmieren mit Delphi von Wolf-Gert Matthäus Grundkurs Visual Basic von Sabine Kämper Visual Basic für technische Anwendungen von Jürgen Radel Grundkurs Smalltalk – Objektorientierung von Anfang an von Johannes Brauer Grundkurs Software-Entwicklung mit C++ von Dietrich May Grundkurs JAVA von Dietmar Abts Aufbaukurs JAVA von Dietmar Abts Grundkurs Java-Technologien von Erwin Merker Java ist eine Sprache von Ulrich Grude Middleware in Java von Steffen Heinzl und Markus Mathes Das Linux-Tutorial – Ihr Weg zum LPI-Zertifikat von Helmut Pils Rechnerarchitektur von Paul Herrmann Grundkurs Relationale Datenbanken von René Steiner Grundkurs Datenbankentwurf von Helmut Jarosch Datenbank-Engineering von Alfred Moos Grundlagen der Rechnerkommunikation von Bernd Schürmann Netze – Protokolle – Spezifikationen von Alfred Olbrich Grundkurs Verteilte Systeme von Günther Bengel Grundkurs Mobile Kommunikationssysteme von Martin Sauter

www.vieweg.de

Grundkurs Wirtschaftsinformatik von Dietmar Abts und Wilhelm Mülder Grundkurs Theoretische Informatik von Gottfried Vossen und Kurt-Ulrich Witt Anwendungsorientierte Wirtschaftsinformatik von Paul Alpar, Heinz Lothar Grob, Peter Weimann und Robert Winter Business Intelligence – Grundlagen und praktische Anwendungen von Hans-Georg Kemper, Walid Mehanna und Carsten Unger Grundkurs Geschäftsprozess-Management von Andreas Gadatsch Prozessmodellierung mit ARIS ® von Heinrich Seidlmeier ITIL kompakt und verständlich von Alfred Olbrich BWL kompakt und verständlich von Notger Carl, Rudolf Fiedler, William Jórasz und Manfred Kiesel Masterkurs IT-Controlling von Andreas Gadatsch und Elmar Mayer Masterkurs Computergrafik und Bildverarbeitung von Alfred Nischwitz und Peter Haberäcker Grundkurs Mediengestaltung von David Starmann Grundkurs Web-Programmierung von Günter Pomaska Web-Programmierung von Oral Avcı, Ralph Trittmann und Werner Mellis Grundkurs MySQL und PHP von Martin Pollakowski Grundkurs SAP R/3® von André Maassen und Markus Schoenen SAP ®-gestütztes Rechnungswesen von Andreas Gadatsch und Detlev Frick Kostenträgerrechnung mit SAP R/3® von Franz Klenger und Ellen Falk-Kalms Masterkurs Kostenstellenrechnung mit SAP® von Franz Klenger und Ellen Falk-Kalms Controlling mit SAP ® von Gunther Friedl, Christian Hilz und Burkhard Pedell Logistikprozesse mit SAP R/3® von Jochen Benz und Markus Höflinger IT-Projekte strukturiert realisieren von Ralph Brugger Programmieren lernen mit Java von Erwin Merker und Roman Merker

Erwin Merker Roman Merker

Programmieren lernen mit Java Leicht verständlich – Griffige Beispiele – Ausführbare Programme Mit 52 Abbildungen

Bibliografische Information Der Deutschen Bibliothek Die Deutsche Bibliothek verzeichnet diese Publikation in der Deutschen Nationalbibliografie; detaillierte bibliografische Daten sind im Internet über abrufbar.

Prof. Dr.-Ing. habil. Reiner R. Dumke lehrt Software-Technik an der Universität Magdeburg. Er ist Leiter des dortigen Software-Messlabors sowie Leiter bzw. Mitglied in maßgeblichen Gremien auf dem Gebiet der Softwaremetrie (GI-Fachgruppe für Software-Messung und -Bewertung; DASMA; COSMIC).

Die Wiedergabe von Gebrauchsnamen, Handelsnamen, Warenbezeichnungen usw. in diesem Werk berechtigt auch ohne besondere Kennzeichnung nicht zu der Annahme, dass solche Namen im Sinne von Warenzeichen- und Markenschutz-Gesetzgebung als frei zu betrachten wären und daher von jedermann benutzt werden dürfen. Höchste inhaltliche und technische Qualität unserer Produkte ist unser Ziel. Bei der Produktion und Auslieferung unserer Bücher wollen wir die Umwelt schonen: Dieses Buch ist auf säurefreiem und chlorfrei gebleichtem Papier gedruckt. Die Einschweißfolie besteht aus Polyäthylen und damit aus organischen Grundstoffen, die weder bei der Herstellung noch bei der Verbrennung Schadstoffe freisetzen.

1. Auflage Februar 2006 Alle Rechte vorbehalten © Friedr. Vieweg & Sohn Verlag | GWV Fachverlage GmbH, Wiesbaden 2006 Lektorat: Dr. Reinald Klockenbusch / Andrea Broßler Der Vieweg Verlag ist ein Unternehmen von Springer Science+Business Media. www.vieweg.de

Das Werk einschließlich aller seiner Teile ist urheberrechtlich geschützt. Jede Verwertung außerhalb der engen Grenzen des Urheberrechtsgesetzes ist ohne Zustimmung des Verlags unzulässig und strafbar. Das gilt insbesondere für Vervielfältigungen, Übersetzungen, Mikroverfilmungen und die Einspeicherung und Verarbeitung in elektronischen Systemen.

Konzeption und Layout des Umschlags: Ulrike Weigel, www.CorporateDesignGroup.de Umschlagbild: Nina Faber de.sign, Wiesbaden Druck und buchbinderische Verarbeitung: Tˇeˇsínská tiskárna, a.s.; Tschechische Republik Gedruckt auf säurefreiem und chlorfrei gebleichtem Papier. Printed in the Czech Republic ISBN 3-8348-0068-6



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(( merker2.doc

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(( merker2.doc

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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RS[ PW\É`S\ 7\VOZb \]QV [Wb RS` VSfORShW[OZS\ 0ShSWQV\c\U RSa 7\VOZba eW`R RS` >`]U`O[[WS`S` W[ >`]U`O[[ \]`[OZS`eSWaS O`PSWbS\ ?a^VaP\\ 0bRXX ) 0aQTXcT] \Xc ST\ 1dRWbcPQT] 0 X\ 9PeP?a^VaP\\ public class Ascii01 { public static void main(String args[]) { char zeichen = 'A'; System.out.println(zeichen); } } 3a Wab OcQV [rUZWQV O\abSZZS RSa HSWQVS\a RSaaS\ >ZObh\c[[S` W\ RS` BOPSZZS RSa /A1771]RSa OcahcUSPS\ ?a^VaP\\ 0bRXX!) 0dbVTQT] STa ?[Pci]d\\Ta TX]Tb ITXRWT]b public class Ascii02 { public static void main(String args[]) { char zeichen = 'A'; System.out.println((byte)zeichen); } } AWS eS`RS\ OPS` W\ RS\ \OQVT]ZUS\RS\ 0SWa^WSZS\ aSVS\ ROaa Tº` W\bS`\ObW]\OZS >`]U`O[[S USYS\\hSWQV\Sb Rc`QV [SV`S`S A^`OQVS\ c\bS`aQVWSRZWQVS A]\RS`hSW QVS\ YcZbc`SZZS 0Sa]\RS`VSWbS\ PSW RS` 2O`abSZZc\U d]\ HOVZS\ ]RS` 2Obc[aO\UO PS\ cae Sa VÉcTWU \]beS\RWU Wab HSWQVS\ c[hcT]`[S\ ]RS` W\RWdWRcSZZ hc W\bS` ^`SbWS`S\ 2Ohc aW\R RSbOWZZWS`bS 9S\\b\WaaS RS` 1]RWS`c\UaT]`[S\ c\R RS` dS`eS\ RSbS\ HSWQVS\Q]RSa S`T]`RS`ZWQV 2SaeSUS\ a]ZZ ROa \ÉQVabS >`]U`O[[ RS[]\ab`WS`S\ eWS RS` >`]U`O[[WS`S` a] e]VZ RS\ PW\É`S\ 7\VOZb OZa OcQV RWS VSfORShW[OZS @S^`ÉaS\bObW]\ SW\Sa 0gbSa Oca USPS\ YO\\ ?a^VaP\\ 0bRXX") 1X]ÊaTa d]S WTgPSTiX\P[Ta FTac TX]Tb ITXRWT]b public class Ascii03 { public static void main(String args[]) { char zeichen = 'A'; System.out.println(Integer.toBinaryString(zeichen)); System.out.println(Integer.toHexString(zeichen)); } } 2WS S`abS\ ! HSWQVS\ RSa /A1771]RSa aW\R Tº` AbScS`hSWQVS\ Q]\b`]Z QVO`OQbS` `SaS`dWS`b SbeO Tº` RWS AbScS`c\U SW\Sa 2`cQYS`a 2WSaS c\R`cQYPO`S\ 9]\b`]ZZhSW

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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d\fP]ST[] public class Ascii06 { public static void main(String args[]) { String bits = "5A"; System.out.println((char)Integer.parseInt(bits, 16)); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]



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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]

4]`[ Kdffff e]PSW ffff RS` VSfORShW[OZS ES`b Wab RS\ ROa HSWQVS\ W[ C\WQ]RS VOb RS` 1]RS^]W\b 2S` >`ÉTWf Jc abSVb Tº` C\WQ]RS 7[ \OQVT]ZUS\RS\ >`]U`O[[ a]ZZ SW\ C\WQ]RSHSWQVS\ PSO`PSWbSb eS`RS\ ROa OcQV [Wb SW\S[ \]`[OZS\ 4]\b O\UShSWUb eS`RS\ YO\\( ROa >`]hS\bhSWQVS\  /\US \][[S\ c\aS`S BOabObc` S\bVÉZb RWSaSa HSWQVS\ \WQVb RO\\ Yr\\bS Sa W[ >`]U`O[[ S`hScUb eS`RS\ 2Oa HSWQVS\ VOb W[ C\WQ]RS RS\ 1]RS^]W\b  # ?a^VaP\\ D]XR^ST ) D]XR^STITXRWT] X\ ?a^VaP\\ TaiTdVT] public class Unicode01 { public static void main(String args[]) char c = '\u0025'; System.out.println(c); } }

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Stand: 22.12.2005 13:39:00 ))

"%

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public class Unicode02 { public static void main(String args[]) char c = '\u20AC'; System.out.println(c); } }

{

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]

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Stand: 22.12.2005 13:39:00 ))

"%

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public class Unicode03 { public static void main (String args[]) throws Exception { // ASCII als nach Unicode konvertieren byte[] ascii = {'a', 'b', 'c'}; String str = new String(ascii, "ISO-8859-1"); System.out.println(str); // Unicode (UTF-16) nach UTF-8 konvertieren byte[] utf8 = str.getBytes("UTF8"); for (int i=0; i
 9OTJGRRK1USVGZOHOROZoZYVXUHRKSKJ[XIN;TOIUJKMKRYZ% ES\\ OZZS 1][^cbS`agabS[S c\R >`]U`O[[S [Wb RS[ C\WQ]RS O`PSWbS\ eº`RS\ c\R OcQV OZZS d]`VO\RS\S\ 2ObS\PSabÉ\RS W[ C\WQ]RS USa^SWQVS`b eÉ`S\( XO A]ZO\US Sa XSR]QV \]QV /A1777\T]`[ObW]\S\ UWPb( \SW\ 4º` RWS 7\bS`^`SbObW]\ d]\ /A177 7\T]`[ObW]\S\ Wab Sa S`T]`RS`ZWQV RS\ PSW RS` 9]RWS`c\U PS\cbhbS\ AbO\RO`R hc YS\ \S\ h0 7A= &&#' 2SaeSUS\ S`ZOcPS\ BSQV\]Z]UWS\ RWS RS\ C\WQ]RS PS\cbhS\ eWS F;: ]RS` 8OdO RWS /\UOPS SW\S` 1]RS^OUS 2WSaSa 3\Q]RW\U a^WSZb SW\S S\b aQVSWRS\RS @]ZZS PSW W\bS`\ObW]\OZS\ /\eS\Rc\US\ c\R PSW[ 2ObS\OcabOcaQV 7\ 8OdO UWPb Sa SW\S UO\hS @SWVS d]\ 9ZOaaS\ RWS aWQV [Wb RS` :]YOZWaWS`c\U OZa] OcQV [Wb RS` /caeOVZ RS` 3\Q]RW\UBOPSZZS PSTOaaS\ /PS` RWS /`b RS` 1]RWS`c\U /A177 301271 C\WQ]RS c\R RWS 2O`abSZZc\U RS` HSW QVS\aÉbhS Rc`QV dS`aQVWSRS\S 4]\ba aW\R \WQVb RWS SW\hWUS\ 6W\RS`\WaaS PSW[ 2O bS\OcabOcaQV heWaQVS\ RS\ 1][^cbS`\ 5^[VT]ST 5aPVT] bX]S idbÊci[XRW id Z[ÊaT] SP\Xc TX]T UTW[TaUaTXT ETabcÊ]SX Vd]V ifXbRWT] ?Pac]Ta] SXT bXRW PdU eTabRWXTST]T] ?[PccU^a\T] QTUX]ST] \»V[XRW Xbc) •

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

" 8]U^a\PcX^]T] \PbRWX]T[[ SPabcT[[T]

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))







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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]



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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]



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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

#"

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]

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Stand: 22.12.2005 13:39:00 ))

##

B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]

 *KQRGXGZOUTSOZVXOSOZO\KT*GZKTZ_VKT 3W\TOQVS DO`WOPZS aW\R YSW\S =PXSYbS) aWS eS`RS\ RW`SYb `STS`S\hWS`b RV RS` dS`SW\ PO`bS 7RS\bWTWS` Wab SW\ >ZObhVOZbS` Tº` RS\ ES`b RS` DO`WOPZS\ 5O\h O\RS`a ROUSUS\ RWS 2SYZO`ObW]\ SW\Sa =PXSYba( 2S` 7RS\bWTWS` Tº` SW\ =PXSYb S\bVÉZb ZSRWUZWQV SW\S /R`SaaS OZa DS`eSWa OcT RWS SWUS\bZWQVS\ =PXSYbTSZRS` BSQV\WaQV OcaUSR`ºQYb( 7\ SW \S[ ;OaQVW\S\PSTSVZ UWPb Sa YSW\S ag[P]ZWaQVS\ `]U`O[[ hSWUb eWS SW\S DO`WOP ZS d][ SW\TOQVS\ Bg^ RSYZO`WS`b c\R RO\OQV ^S` ES`bShceSWac\U [Wb SW\S[ ES`b USTºZZb eW`R ?a^VaP\\ 3TZ[PaPcX^]") 4X]UPRWT 3PcT]ch_T] STZ[PaXTaT] d]S eTaPaQTXcT] public class Deklaration03 { public static void main(String[] args) { int zahl1; zahl1 = 100; System.out.println(zahl1); } } ;Wb RS` /\eSWac\U int zahl1; eW`R RWS DO`WOPZS iPW[ RSYZO`WS`b 2S` 1][^WZS` `SaS`dWS`b RS\ PS\rbWUbS\ A^SWQVS`^ZObh OPVÉ\UWU d][ 2ObS\bg^ 7\ RWSaS[ 0SWa^WSZ Wab OZa Bg^ X]c O\USUSPS\ RWS /PYº`hc\U Tº` 7\bSUS` S\UZ 5O\hhOVZ 2WS A^`OQV a^ShWTWYObW]\ d]\ 8OdO ZSUb TSab ROaa Tº` RS\ 2ObS\bg^ X]c W[[S` " 0gbSa W[ A^SWQVS` O\USZSUb eS`RS\ C\R RWS W\bS`\S @S^`ÉaS\bObW]\ RS` ES`bS RWSaSa =PXSYba Wab RO[Wb OcQV TSabUSZSUb  \É[ZWQV `SW\ PW\É` A][Wb eW`R RWS 2ShW[OZhOVZ  W[ /`PSWbaa^SW QVS` eWS T]ZUb RO`USabSZZb ]V\S 0S`ºQYaWQVbWUc\U RSa D]`hSWQVS\a(  

 

 

 

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]

2WS SW\USPOcbS\ 2ObS\bg^S\ aW\R ROa 4c\RO[S\b SW\S` >`]U`O[[WS`a^`OQVS 2Sa eSUS\ eS`RS\ eW`  PSd]` eW` c\a W\ RS\ \OQVT]ZUS\RS\ 9O^WbSZ\ [Wb aSZPab RSTW \WS`bS\ 2ObS\bg^S\ OZa] [Wb RS\ 9ZOaaS\ PSTOaaS\  hc\ÉQVab RWS OQVb 0OaWaRObS\bg ^S\ PSa^`SQVS\ 0SW RS` 2SYZO`ObW]\ SW\S` SW\TOQVS\ DO`WOPZS\ eW`R RS` A^SWQVS`^ZObh Tº` SW\S\ [rU ZWQVS\ ES`b UZSWQV `SaS`dWS`b 0SW RS` 2SYZO`ObW]\ SW\S` @STS`S\hdO`WOPZS\ ROUSUS\ eW`R ZSRWUZWQV RS` >ZObh Tº` RWS /R`SaaS `SaS`dWS`b RO\OQV Wab SW\ heSWbS` AQV`Wbb RWS 7\abO\hWWS`c\U [Wb ]Tf S`T]`RS`ZWQV RO[Wb SW\ =PXSYb S\babSVb 6WS`hc SW\ 6W\eSWa( 7\ SW\WUS\ O\RS`S\ >`]U`O[[WS`a^`OQVS\ eW`R heWaQVS\ 2SYZO`ObW]\ c\R 2STW\WbW]\ ab`S\U c\bS`aQVWSRS\ /Za 2SYZO`ObW]\ eW`R RS` D]`UO\U PShSWQV\Sb RS` SW\S\ \ScS\ 0ShSWQV\S` h0 Tº` SW\S DO`WOPZS PSYO\\b [OQVb c\R c\bS` 2STW\WbW]\ eW`R RO\\ \WQVb \c` RWS 2SYZO`ObW]\ a]\RS`\ OcQV RWS A^SWQVS`OZZ]YObW]\ Tº` RWS DO`WOPZS dS` abO\RS\ 8OdO c\bS`aQVSWRSb \WQVb heWaQVS\ RWSaS\ PSWRS\ 0SU`WTTS\ /cT RS\ \ÉQVabS\ ASWbS\ eW`R XSRS` 2ObS\bg^ RSbOWZZWS`b PSa^`]QVS\ 2WS 0SWa^WSZ^`] U`O[[S VOPS\ W[[S` RS\ UZSWQVS\ /cTPOc 2O[Wb AWS SW\ DS`abÉ\R\Wa Tº` RWS Ab`cY bc` c\R RWS eWQVbWUabS\ A^`OQVSZS[S\bS RWSaS` W[[S` UZSWQV OcTUSPOcbS\ >`]U`O[[S PSY][[S\ S`ZÉcbS`\ eW` hc\ÉQVab SW\ ;cabS`^`]U`O[[ ?a^VaP\\ Ch_T] ) 4X] ch_XbRWTb 43E?a^VaP\\ bXTWc X] 9PeP b^ Pdb)

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Stand: 22.12.2005 13:39:00 ))

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B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]

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 3W\ZSaS\ SW\Sa ES`bSa d][ RSTW\WS`bS\ 3W\UOPSUS`Éb( zahl = eingabe.nextInt();



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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]

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##! 3Ta 3PcT]ch_ X]c 2S` eWQVbWUabS 5O\hhOVZS\bg^ Wab X]c ROa Wab RWS /PYº`hc\U Tº` 7\bSUS` S\UZ UO\hS HOVZ 2O[Wb eW`R TSabUSZSUb ROaa RWSaS` A^SWQVS`^ZObh ]da Tº` RWS A^SWQVS`c\U d]\ UO\hS\ HOVZS\ US\cbhb eS`RS\ YO\\ ROaa ROTº` W[[S` " 0gbSa W[ /`PSWbaa^SWQVS` hc` DS`TºUc\U abSVS\ c\OPVÉ\UWU d]\ RS` >ZObbT]`[ c\R d]\ RS` ;OaQVW\S\O`QVW bSYbc` c\R ROaa RWS ! PWba `SW\ PW\É` [Wb RS` AbSZZS\eS`bWUYSWb d]\ S` >]bS\hS\ W\bS`^`SbWS`b eS`RS\ ESWbS`VW\ Wab Rc`QV RS\ 2ObS\bg^ TSabZSUb eSZQVS =^S`ObW]\S\ [Wb RWSaS` DO`WOPZS\ S`ZOcPb aW\R h0 `SQV\S\ OPS` YSW\ Y]\YObS\WS`S\ ?a^VaP\\ 8]cTVTa ) 0aQTXcT] \Xc ST\ 3PcT]ch_ X]c import java.util.Scanner; public class Integer01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); int zahl; // Deklaration zahl = eingabe.nextInt(); // Einlesen System.out.println("Eingelesen wurde: " + zahl); } } #"

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Stand: 22.12.2005 13:39:00 ))

##

B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]

ÎQd]VT] id\ ?a^VaP\\ 8]cTVTa ÎQd]V ( 0WbbS bSabS\ AWS ROa >`]U`O[[ W\RS[ AWS hc\ÉQVab SW\S\ PSZWSPWUS\ 7\bS US`eS`b SW\USPS\ 2O\\ Wab OZZSa W\ =`R\c\U ÎQd]V !( BSabS\ AWS RO\OQV [Wb SW\S[ \WQVb\c[S`WaQVS\ ES`b h0 [Wb 0cQVabO PS\ ]RS` [Wb SW\S[ USP`]QVS\S\ /\bSWZ S\beSRS` W\ O[S`WYO\WaQVS` AQV`SWPeSWaS PSW RS` O\abSZZS RSa 9][[O SW\ >c\Yb SW\USbW^^b eW`R h0 #  ]RS` OcQV RWS RScbaQVS AQV`SWPeSWaS 2O\\ S`hScUb RWS 8D; SW\S\ :OcThSWbTSVZS` 3fQS^bW]\ ÎQd]V ") BSabS\ AWS XSbhb ROa >`]U`O[[ W\RS[ AWS SW\S \SUObWdS 5O\hhOVZ SW\US PS\ /QVbc\U( ROa D]`hSWQVS\ [caa d]` RS` HOVZ abSVS\ OZa] h0  #

##!! 3Ta 3PcT]ch_ QhcT

2Oa \ÉQVabS >`]U`O[[ S`eO`bSb d][ 0SRWS\S` ES`bS d][ 2ObS\bg^ QhcT 2WSa Wab SPS\TOZZa SW\ \c[S`WaQVS` 2ObS\bg^ EWS RWS BOPSZZS " hSWUb Wab RS` VrQVabS ES`b W\ SW\S` 0gbSDO`WOPZS\  % 3`ZÉcbS`c\U( 3W\S QhcTDO`WOPZS S\bVÉZb W[[S` SW\ D]` hSWQVS\PWb RSaeSUS\ abSVS\ Tº` RWS HOVZ aSZPab \c` % PWba hc` DS`TºUc\U 2Oa UWPb  & ;rUZWQVYSWbS\ PSUW\\S\R [Wb RS` 2ShW[OZhOVZ  [OfW[OZ RO\\  % ^]aWbWd ]RS` [W\W[OZ  % \SUObWd ?a^VaP\\ 1hcT ) 0aQTXcT] \Xc ST\ 3PcT]ch_ QhcT import java.util.Scanner; public class Byte01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); byte zahl; // Deklaration zahl = eingabe.nextByte(); // Eingabe System.out.println("Eingegeben wurde: " + zahl); } } ÎQd]V id\ ?a^VaP\\ 1hcT ÎQd]V ( BSabS\ AWS ROa >`]U`O[[ hc\ÉQVab [Wb SW\S` Y]``SYbS\ \c[S`WaQVS\ 3W\ UOPS h0 & c\R RO\OQV [Wb SW\S[ ES`b RS` OczS`VOZP RSa ES`bSPS`SWQVa SW\S` QhcTDO`WOPZS\ ZWSUb h0  & ]RS` SW\S[ \WQVb\c[S`WaQVS\ ES`b ÎQd]V !( 3`ZOcPb RWSaS` 2ObS\bg^ RWS 3W\UOPS SW\S` \SUObWdS\ HOVZ h0 #- ÎQd]V "( DS`acQVS\ AWS aSZPababÉ\RWU SW\S\ [^]V2ObS\bg^ hc PS\cbhS\ :rac\Ua VW\eSWaS( 2Ohc Wab W\ HSWZS # RS` 2ObS\bg^ OcT [^]V hc É\RS`\ c\R W\ RS` HSWZS $ ZOcbSb RS` :SaSPSTSVZ(



zahl = eingabe.nextLong();

##

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]

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2WSaS PSWRS\ 0SWa^WSZS hSWUS\ SW\S\ RS` D]`bSWZS RS` 5ZSWbY][[O2O`abSZZc\U( RWS AQV`SWPeSWaS YO\\ PSW U`]zS\ ]RS` aSV` YZSW\S\ HOVZS\ aSV` Y][^OYb aSW\ 2S` ES`bSPS`SWQV Wab S\ba^`SQVS\R V]QV( Tº` S^dQ[TBg^S\ Wab RWS U`rzbS HOVZ &3!& 2WS /cTbSWZc\U W\ ;O\bWaaS c\R 3f^]\S\b Wab eOVZT`SW c\R YO\\ c\bS`aQVWSRZWQV US eÉVZb eS`RS\ A] YO\\ RWS 2ShW[OZhOVZ !%#' h0 eWS T]ZUb RO`USabSZZb eS`RS\( !%#' OZa ;O\bWaaS c\R  OZa 3f^]\S\b OZa]( !%#' OZa ;O\bWaaS c\R ! OZa 3f^]\S\b OZa]( !%#' OZa ;O\bWaaS c\R  OZa 3f^]\S\b OZa](

!%#'3 !%#'3! !%#'S

]RS` ]RS`

#$

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Stand: 22.12.2005 13:39:00 ))

##

B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]

8OdO YS\\b heSW c\bS`aQVWSRZWQVS 5ZSWbY][[OBg^S\ U[^Pc c\R S^dQ[T AWS c\bS` aQVSWRS\ aWQV W\ RS` /\hOVZ A^SWQVS`abSZZS\ RWS hc` DS`TºUc\U abSVS\( •

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S^dQ[T VOb R]^^SZb a] dWSZS \É[ZWQV $" PWba ROd]\ " aWU\WTWYO\bS 2ShW[OZabSZ ZS\

2Oa T]ZUS\RS >`]U`O[[ a^SWQVS`b RS\ 3W\UOPSeS`b W\ SW\S` DO`WOPZS\ d][ 2ObS\bg^ S^dQ[T 2O[Wb Wab Sa Tº` RWSaS DO`WOPZS W\ RS` :OUS USP`]QVS\S HOVZS\ [Wb 9][[O abSZZS\ hc ZSaS\ c\R hc dS`O`PSWbS\ ?a^VaP\\ 3^dQ[T ) 0aQTXcT] \Xc ST\ 3PcT]ch_ S^dQ[T import java.util.Scanner; public class Double01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); double zahl; // Deklaration zahl = eingabe.nextDouble(); // Einlesen System.out.println("Eingegeben wurde: " + zahl); } } ÎQd]VT] id\ ?a^VaP\\ 3^dQ[T

ÎQd]V ) 4º` RWS 3W\UOPS d]\ 5ZSWbY][[OhOVZS\ UWPb Sa [SV`S`S ;rUZWQVYSWbS\( S\beSRS` eW`R RWS AbO\RO`RRO`abSZZc\U USeÉVZb h0 #!" ]RS` Sa eW`R RWS eWaaS\ aQVOTbZWQVS <]bObW]\ dS`eS\RSb h0 %3# 0WbbS bSabS\ AWS PSWRS DO`WO\bS\ /QVbc\U( 2Oa >`]U`O[[ Wab O\US^Oaab O\ RWS RScbaQVS AQV`SWPeSWaS RV Sa eW`R SW\ 9][[O S`eO`bSb c\R YSW\ 2ShW[OZ^c\Yb ÎQd]V !) Ò\RS`\ AWS W[ ?cSZZbSfb RS\ 2ObS\bg^ RS` DO`WOPZS\ iPW[ W\ U[^Pc :r ac\UaVW\eSWa( 2S\YS\ AWS RO`O\ ROaa aWQV OcQV RS` ;SbV]RS\\O[S É\RS`b  d]\ ]Tgc3^dQ[T OcT ]Tgc5[^Pc BSabS\ AWS ROa >`]U`O[[ [Wb RS\ T]ZUS\RS\ dWS` 5ZSWb Y][[OhOVZS\( #3  ! S  !3&  2WS 5ZSWbY][[O2O`abSZZc\U VOb \SPS\ RS[ D]`bSWZ RS` Y][^OYbS\ 2O`abSZZc\U Rc`QV 0SaSWbWUc\U d]\ ºPS`TZºaaWUS\ `]hSaa]`S\ aQV\SZZS` RO[Wb O`PSWbS\ Yr\\S\ OZa [Wb PW\É`S\ 5O\hhOVZS\ ]RS` [Wb PW\É` Q]RWS`bS\ 2ShW[OZhOVZS\ RWSaS a] US\O\\bS\ 012HOVZS\ eS`RS\ eW` a^ÉbS` US\OcS` PSVO\RSZ\ /PS` /QVbc\U( 2c`QV RS\ ESQVaSZ RSa AbSZZS\eS`bagabS[a d][ HSV\S``SQV\S\ hc` HeSWS`RO`abSZZc\U Yr\\S\ aWQV C\US\OcWUYSWbS\ S`USPS\ 2S` 5`c\R Wab RWS PS U`S\hbS AbSZZS\O\hOVZ RWS Tº` 0`cQVhOVZS\ hc` DS`TºUc\U abSVb HeO` Wab ROa 0W\É` agabS[ \WQVb [SV` ]RS` eS\WUS` US\Oc OZa ROa 2ShW[OZagabS[ OPS` Sa S\ba^`WQVb SPS\ \WQVb c\aS`S` 2S\YeSWaS 7[ 9O^WbSZ % UWPb Sa ROhc eSWbS`S 6W\eSWaS #%

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]

 *KX*GZKTZ_VHUURKGT 3W\S /caaOUS YO\\ eOV` ]RS` TOZaQV aSW\ C[ SW\S\ RWSaS` PSWRS\ EOV`VSWbaeS`bS a^SWQVS`\ hc Yr\\S\ Wab W\ 8OdO RS` 2ObS\bg^ Q^^[TP] SW\USPOcb 2WSaS` Bg^ YS\\b OZa] \c` RWSaS PSWRS\ ES`bS RWSa Wab aSW\ ES`bSPS`SWQV 2WS PSWRS\ [rUZWQVS\ EOV`VSWbaeS`bS eS`RS\ UP[bT c\R cadT US\O\\b ?a^VaP\\ 1^^[TP] ) 0aQTXcT] \Xc ST\ 3PcT]ch_ Q^^[TP] public class Boolean01 { public static void main (String args[]) { boolean aussage = false; System.out.println("Aussage ist: " + aussage); System.out.println("d.h. sie ist nicht: " + !aussage); } } 2Oa >`]U`O[[ 1^^[TP] YPeP S`hScUb SW\S 0]]ZSaQVS DO`WOPZS c\R W\WbWOZWaWS`b aWS [Wb RS[ /\TO\UaeS`b UP[bT 2WSaS` eW`R W[ S`abS\ /caUOPSPSTSVZ c\dS`É\RS`b OcaUS USPS\ W[ heSWbS\ _aX]c[]/cT`cT XSR]QV eW`R RS` EOV`VSWbaeS`b Rc`QV DS`eS\Rc\U RSa  /ca`cTShSWQVS\ c[USYSV`b Oca UP[bT eW`R cadT ?a^VaP\\ 1^^[TP]!) 4X][TbT] TX]Tb FPWaWTXcbfTacTb

import java.io.*; import java.util.Scanner; public class Boolean02 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); boolean wahr; wahr = eingabe.nextBoolean(); // Eingabe System.out.println("Ergebnis ist: " + wahr); // Ausgabe } } ÎQd]V id\ ?a^VaP\\ 1^^[TP]! BSabS\ RWS ROa >`]U`O[[ W\RS[ AWS XSeSWZa SW\[OZ T]ZUS\RS ES`bS SW\USPS\( b`cS TOZaS c\R B@C3 c\R 4O:aS ;O\ aOUb cadT c\R UP[bT aW\R SW\USPOcbS :WbS`OZS c\R aWS [ºaaS\ SfOYb a] USaQV`WS PS\ eS`RS\ /PS`( RWS 5`]z ]RS` 9ZSW\aQV`SWPc\U a^WSZb Pdb]PW\bfTXbT YSW\S @]ZZS RS\\ RWS ;SbV]RS ]Tgc1^^[TP] Wab a] USaQV`WSPS\ ROaa aWS RS\ SW\USUSPS \S\ Ab`W\U Ocb][ObWaQV W\ 9ZSW\PcQVabOPS\ c[eO\RSZb 3W\USaSbhb eW`R RS` Q^^[TP]2ObS\bg^ Tº` RWS A^SWQVS`c\U d]\ HcabÉ\RS\ h0 \OQV DS`UZSWQVS\ 0]]ZSaQVS DO`WOPZS\ Yr\\S\ a] OZa AQVOZbS` RWS\S\ Tº` ROa 4SabVOZbS\ d]\ DS`UZSWQVaS`USP\WaaS\ d]\ RS\S\ RO\\ eSWbS`S /PZÉcTS OPVÉ\UWU US[OQVb eS` RS\ 2WS AbScS`PSTSVZS aWSVS 9O^WbSZ & O`PSWbS\ OZZS [Wb P]]ZSaQVS\ ES`bS\ #&

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Stand: 22.12.2005 13:39:00 ))

##

B_TiXP[UP[[) ?aX\XcXeT 3PcT]ch_T]

 *KX*GZKTZ_VINGX 2S` HSWQVS\bg^ RWPa Wab RS` SW\hWUS ^`W[WbWdS 2ObS\bg^ RS` [Wb SW\S` dS`SW\PO`bS\ 1]RWS`c\UabOPSZZS O`PSWbSb RV eÉV`S\R RWS 0WbY][PW\ObW]\S\ W\ RS\ dWS` 5O\hhOV ZS\bg^S\ OZa 2ShW[OZhOVZS\ W\bS`^`SbWS`b eS`RS\ eW`R RS` 7\VOZb SW\S` RWPa DO`WOPZS\ OZa SW\ SW\hSZ\Sa HSWQVS\ W\bS`^`SbWS`b 7\ 8OdO eW`R W\bS`\ Tº` XSRSa HSW QVS\ Oca RS[ C\WQ]RS RWS dS`SW\PO`bS >ZObh\c[[S` Q]RS^]W\b USa^SWQVS`b eS\\ RS` 2ObS\bg^ RWPa dS`SW\PO`b eW`R 7[ C\WQ]RS Wab Tº` XSRSa HSWQVS\ RWS 1]RWS`c\U TSabUSZSUb O\RS`a OZa PSW HOVZS\ e] \WQVb RWS HWTTS`\hSWQVS\ SW\hSZ\ dS`aQVZºaaSZb eS`RS\ a]\RS`\ e] RS` HOVZS\eS`b OZa 5O\hSa c[US`SQV\Sb eW`R W\ SW\S 2cOZhOVZ [Wb RS` AbSZZS\eS`bWUYSWb  4º` XSRSa HSWQVS\ eS`RS\ W\ 8OdO heSW 0gbSa PSZSUb D]`hSWQVS\ UWPb Sa PSW[ 2ObS\ bg^ RWPa \WQVb 2O[Wb ZWSUb RS` VSfORShW[OZS ES`bSPS`SWQV RSa 2ObS\bg^a RWPa heW aQVS\ Jc \WSR`WUabS` ES`b c\R Jc4444 VrQVabS` ES`b 2WS RW`SYbS 3W\UOPS SW\Sa C\WQ]RShSWQVS\a Wab ºPS` RWS BOabObc` BhbcT\X] \WQVb a] ]V\S eSWbS`Sa [rUZWQV RS\\ e] UWPb Sa BOabObc`S\ [Wb SW\WUS\ BOcaS\R C\WQ]RS hSWQVS\- 2SaVOZP VOPS\ RWS 8OdO3\beWQYZS` S\baQVWSRS\ ROaa SW\S[ >`]U`O[[ hc \ÉQVab \c` RS` \c[S`WaQVS ES`b RSa HSWQVS\a ºPS`USPS\ eW`R eS\\ Sa d]\ RS` BOabObc` ZWSab 9]\Y`Sb eW`R RS[ >`]U`O[[ RS` 1]RS^]W\b Oca RS` C\WQ]RSBOPSZZS USZWSTS`b 2WSaS` ES`b [caa hc\ÉQVab W\ SW\S` X]cDO`WOPZS\ S[^TO\US\ eS`RS\ c\R YO\\ RO\\ XS \OQV 0SRO`T W\bS`^`SbWS`b eS`RS\ 2WSaS D]`USVS\aeSWaS UWZb OcQV Tº` VS`Yr[[ZWQVS /A177HSWQVS\ RWS W[ C\WQ]RS OZa C\bS`[S\US S\bVOZbS\ aW\R ?a^VaP\\ 2WPaPRcTa ) 0aQTXcT] \Xc ST\ 3PcT]ch_ RWPa public class Character01 { public static void main(String[] args) throws Exception { int z; z = System.in.read(); // Liefert den Codepoint char c = (char)z; // Interpretation als (Unicode-)Zeichen System.out.println("Ergebnis ist: " + c); } }

ÎQd]V id\ ?a^VaP\\ 2WPaPRcTa BSabS\ AWS ROa >`]U`O[[ W\RS[ AWS SW\ PSZWSPWUSa HSWQVS\ RSa /A1771]RSa h0 RS\ 0cQVabOPS\ / ]RS` O ^S` BOabObc` SW\USPS\ ÍPS`^`ºTS\ AWS eWS ROa >`]U`O[[ `SOUWS`b eS\\ AWS SW\ HSWQVS\ RSa S`eSWbS`bS\ /A1771]RS h0 SW\S\ RScbaQVS\ C[ZOcb SW\USPS\ =TTS\aWQVbZWQV Wab RWSa \WQVb a] ]V\S eSWbS`Sa [rUZWQV AWS eS`RS\ W[ 9O^WbSZ $ :rac\US\ Tº` RWSaSa >`]PZS[ YS\\S\ ZS`\S\ 2S` 9]^T RS` ;SbV]RS S\bVÉZb RWS 9ZOcaSZ cWa^fb 4gRT_cX^] 2O[Wb eW`R R]Yc [S\bWS`b ROaa W\\S`VOZP RS` ;SbV]RS SW\ :OcThSWbTSVZS` 3fQS^bW]\ OcTb`SbS\ YO\\ RS` \WQVb OPUSTO\US\ c\R a^ShWSZZ PSVO\RSZb eW`R a]\RS`\ c\PSVO\RSZb Rc`QVUS #'

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# :[PbbT] d]S P]STaT Ch_T] QTbRWaTXQT] STR[PaPcX^]

`SWQVb eW`R O\ RS\ /cT`cTS` RWSaS` ;SbV]RS 2O Sa aWQV W\ RWSaS[ 4OZZ c[ RWS \PX] ;SbV]RS VO\RSZb eW`R SW\ SdS\bcSZZ OcTb`SbS\RS` :OcThSWbTSVZS` d]\ RS` 8D; PSO` PSWbSb \]`[OZS`eSWaS PSRScbSb RWSa >`]U`O[[OPP`cQV ES\\ RWS 9ZOcaSZ TSVZb TºV`b ROa hc T]ZUS\RS[ C[eO\RZc\UaTSVZS`( ...unreported exception java.io.IOException; must be caught or declared to be thrown... /cT RS` 0OaWa d]\ SW\hSZ\S\ HSWQVS\ RWPaBg^ Yr\\S\ eSWbS`S BSfbbg^S\ USPWZRSb eS`RS\ A] UWPb Sa W\ 8OdO RWS 9ZOaaS\ BcaX]V c\R BcaX]V1dUUTa RWS SW\ Y][T]`bOPZSa /`PSWbS\ [Wb HSWQVS\YSbbS\ ab`W\Ua S`[rUZWQVS\

 =XGVVKX1RGYYKT 7\ 8OdO UWPb Sa Tº` XSRS\ ^`W[WbWdS\ 2ObS\bg^ SW\S Y]``Sa^]\RWS`S\RS 9ZOaaS OZa] Tº` RS\ Bg^ RWPa RWS 9ZOaaS 2WPaPRcTa Tº` RS\ Bg^ QhcT RWS 9ZOaaS 1hcT cae 2WS 9ZOa aS\ eS`RS\ E`O^^S`9ZOaaS\ US\O\\b AWS Yr\\S\ O\abSZZS RS` SW\TOQVS\ 2ObS\bg ^S\ PS\cbhb eS`RS\ <]beS\RWU YO\\ RS` 3W\aObh d]\ E`O^^S`9ZOaaS\ aSW\ eS\\ =PXSYbdO`WOPZS PS\r bWUb eS`RS\ OZa] SW\TOQVS 2ObS\bg^S\ \WQVb S`ZOcPb aW\R h0 PSW ;SbV]RS\OcT`cTS\ ]RS` eS\\ hcaÉbhZWQVS DS`O`PSWbc\Ua[rUZWQVYSWbS\ US\cbhb eS`RS\ a]ZZS\ ?a^VaP\\ FaP__Ta ) 4X]T] 8]cTVTafTac P[b >QYTZc TaiTdVT] public class Wrapper01 { public static void main (String[] args) Integer zahl = new Integer(25); System.out.println(zahl + 3); } }

{

2Oa >`]U`O[[ FaP__Ta! hSWUb eWS [Wb 6WZTS SW\S` ;SbV]RS RS` E`O^^S`9ZOaaS 2WPaPRcTa OPUST`OUb eS`RS\ YO\\ ]P Sa aWQV PSW SW\S[ HSWQVS\ c[ SW\S\ 5`]z PcQVabOPS\ VO\RSZb ?a^VaP\\ FaP__Ta!)
public class Wrapper02 { public static void main(String[] args) { char zeichen1 = 65; if (Character.isUpperCase(zeichen1)) System.out.println("Es ist ein Großbuchstabe"); } }

$

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Stand: 22.12.2005 13:39:00 ))

#$

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// primitiver Datentyp // Referenz-Datentyp

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

$ A0< eTafP[cT]) EPaXPQ[T d]S >QYTZcT TaiTdVT]

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Stand: 22.12.2005 13:39:00 ))

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{

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Stand: 22.12.2005 13:39:00 ))

$ A0< eTafP[cT]) EPaXPQ[T d]S >QYTZcT TaiTdVT]

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text = new String("Merker");

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public class String02 { public static void main(String[] args) String str1 = new String("Java"); String str2 = new String("buch"); String ergebnis; ergebnis = str1.concat(str2); System.out.println(ergebnis); } }

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Stand: 22.12.2005 13:39:00 ))

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String str1; str1 = new String("Java");

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import java.awt.*; class Point01 { %

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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import java.io.*; public class Stream01 { public static void main(String[] args) throws Exception { InputStreamReader eingabe = new InputStreamReader(System.in); int zeichen = eingabe.read(); System.out.println(zeichen); } }

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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// Kommentarzeile (das erste Zeichen wird gelesen) import java.io.*; public class Stream02 { public static void main(String[] args) throws Exception { InputStream eingabe = new FileInputStream("Stream02.java"); int zeichen = eingabe.read(); System.out.println(zeichen); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

% 4X]VPQT d]S 0dbVPQT SdaRWU¶WaT] X^^_TaPcX^]

 ;TZKXYINOKJROINK/TZKXVXKZGZOUTJKX+OTMGHK 2Oa >`]U`O[[ BcaTP\! ZWSab 2ObS\ SW\ 7[ >`]U`O[[ [caa S\baQVWSRS\ eS`RS\ eWS RWS SW\USZSaS\S 0WbY][PW\ObW]\ W\bS`^`SbWS`b eS`RS\ a]ZZ ;Wb SW\TOQVS\ ;WbbSZ\ YO\\ RS` SW\USZSaS\S X]cES`b h0 OZa SW\ C\WQ]RSHSWQVS\ QVO`OQbS` W\bS`^`SbWS`b eS`RS\ 2WSa RS[]\ab`WS`b ROa \OQVT]ZUS\RS >`]U`O[[ ?a^VaP\\ BcaTP\") 8]cTa_aTcPcX^] STa 4X]VPQT P[b RWPa import java.io.*; public class Stream03 { public static void main(String[] args) throws Exception { InputStreamReader eingabe = new InputStreamReader(System.in); int zeichen = eingabe.read(); System.out.println((char)zeichen); } }

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?a^VaP\\ BcaTP\#) C2?8?ETaQX]Sd]V P[b 4X]VPQTbca^\ import java.net.*; import java.io.*; public class Stream04 { public static void main(String[] args) throws Exception { ServerSocket ss = new ServerSocket(1500); Socket s = ss.accept(); DataInputStream ein = new DataInputStream(s.getInputStream()); int zahl = ein.read(); System.out.println(zahl); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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 eTJKXTJKY*KROSOZKXJKY(KMXKT`[TMY`KOINKTY`[S'[LZXKTTKTJKX(KMXOLLK 2WS 9ZOaaS BRP]]Ta PWSbSb RS[ >`]U`O[[WS`S` RWS ;rUZWQVYSWb RS\ 2SZW[WbS` B`S\\hSWQVS\ XS \OQV AWbcObW]\ hc É\RS`\ 2Oa B`S\\hSWQVS\ Tº` SW\hSZ\S B]YS\ YO\\ Rc`QV /cT`cT RS` ;SbV]RS dbT3T[X\XcTa USÉ\RS`b eS`RS\ ASV` VÉcTWU eS`RS\ RWS SW\hSZ\S\ 0SU`WTTS RS` 3W\UOPSRObS\ Rc`QV 9][[O OPUSb`S\\b c\R ROa T]ZUS\RS >`]U`O[[ hSWUb SW\S :rac\U Tº` RWSaS /cTUOPS\abSZZc\U ?a^VaP\\ BRP]]Ta #) Ó]STa] STb 1TVaT]id]VbiTXRWT]b import java.util.Scanner; public class Scanner04 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); eingabe.useDelimiter(","); // Delimiter aendern String str = eingabe.next(); // Komplettes Wort lesen int zahl1 = eingabe.nextInt(); // Ganzzahl lesen double zahl2 = eingabe.nextDouble(); // E-Format z.B. 5e3 lesen System.out.printf("%s | %d | %f", str, zahl1,zahl2); } }

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 'XHKOZKTSOZVXOTZRT[TJVXOTZ 2Oa 3`USP\Wa SW\S` /caUOPS [Wb RS\ dS`aQVWSRS\S\ _aX]c Phe U^a\Pc;SbV]RS\ Wab W[[S` SW\ Ab`W\U Ch_XbXTacT 3PcT] eWS X]c ]RS` U[^Pc eS`RS\ d]` RS` SWUS\bZWQVS\ /caUOPS Ocb][ObWaQV W\ SW\S Ab`W\U@S^`ÉaS\bObW]\ c[USeO\RSZb ?a^VaP\\ ?aX]c ) 0dbVPQT e^] 9PeP3PcT]ch_T] PdU 2^]b^[T public class Print01 { public static void main(String args[]){ int monat = 5; float gehalt = 2123.45f; String s1 = "Im Monat "; String s2 = "haben Sie "; System.out.print(s1 + monat + " "); System.out.print(s2 + gehalt + " "); System.out.println("verdient"); } } 2S` /caUOPSab`][ YO\\ OZa] Oca SW\S` 9][PW\ObW]\ d]\ PSZWSPWUS\ 8OdO2ObS\bg^S\ PSabSVS\ 2WS ^`W[WbWdS\ 2ObS\bg^S\ eS`RS\ Ocb][ObWaQV W\ SW\S\ Ab`W\U c[USeO\ ''

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import java.io.*; public class Format02 { public static void main(String args[]) { int zahl = 90; System.out.format("%1$d / %`]U`O[[ a] ROaa OZa B`S\\hSWQVS\ \WQVb SW\ AQV`ÉUab`WQV a]\RS`\ SW\ 9][[O OcaUSUSPS\ eW`R Hc[ /PaQVZcaa a]ZZ SW\ 0SWa^WSZ RWS /caUOPS d]\ :WbS`OZS\ c\R bg^WaWS`bS\ DO`WOPZS\ RS[]\ab`WS`S\ ?a^VaP\\ 5^a\Pc") 5^a\PcXTad]V \Xc ;XcTaP[T] d]S ch_XbXTacT] EPaXPQ[T] import java.io.*; public class Format03 { public static void main(String args[]) { int monat1 = 5; float gehalt1 = 2123.45f; String s1 = "Im Monat "; String s2 = "haben Sie "; String s3 = "%s %02d %s %4.2f verdient\n"; System.out.format(s3, s1, monat1, s2, gehalt1); System.out.format(s3, s1, 11, s2, 983f); } } 

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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import java.io.*; public class Datei01 { public static void main(String[] args) throws Exception { OutputStream aus = new FileOutputStream("test1.dat"); DataOutput datenAus = new DataOutputStream(aus); 

(( merker2.doc

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3PcTXeTaPaQTXcd]V

datenAus.writeInt(4700); datenAus.writeUTF("Merker"); datenAus.writeUTF("Steinfurt"); } } 2Oa >`]U`O[[ 3PcTX PS\cbhb RWS 9ZOaaS 3PcP>dc_dcBcaTP\ 2WSaS S\bVÉZb Tº` OZZS SW\USPOcbS\ 8OdO2ObS\bg^S\ SWUS\S /caUOPS[SbV]RS\ h0 Tº` 5O\hhOVZS\ RWS ;SbV]RS faXcT8]c /czS`RS[ Yr\\S\ C\WQ]RSHSWQVS\ SW\hSZ\ [Wb faXcT2WPa ]RS` OZa Ab`W\U [Wb faXcT2WPab OcaUSUSPS\ eS`RS\ 2OPSW PSZSUb XSRSa HSWQVS\ heSW 0gbSa W\ RS` /caUOPSRObSW FPb QTSTdcTc DC5. 7[ >`]U`O[[ 3PcTX PS\cbhS\ eW` RWS ;SbV]RS faXcTDC5 Tº` RWS Ab`W\U/caUOPS c\R RWS VOb SW\S 0Sa]\RS`VSWb( C[ W\ RS` /caUOPSRObSW >ZObh hc a^O`S\ eW`R XSRSa C\WQ]RShSWQVS\ \OQV PSabW[[bS\ DS`TOV`S\ b`O\aT]`[WS`b PSd]` Sa W\ RS\ /caUOPS ab`][ USaQV`WSPS\ eW`R 2OPSW USZbS\ T]ZUS\RS B`O\aT]`[ObW]\a`SUSZ\( •

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Stand: 22.12.2005 13:39:00 ))

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import java.io.*; public class Datei02 { public static void main(String[] args) throws Exception { InputStream ein = new FileInputStream("test1.dat"); DataInput datenEin = new DataInputStream(ein); int plz = datenEin.readInt(); String kdname = datenEin.readUTF(); String ort = datenEin.readUTF(); System.out.println(plz + " " + kdname + " " + ort); } } ÎQd]VT] id\ ?a^VaP\\ 3PcTX! ÎQd]V ( Ò\RS`\ AWS hc\ÉQVab ROa AQV`SWP>`]U`O[[ 3PcTX YPeP a] OP ROaa SW\S heSWbS /R`SaaS W\ RWS 2ObSW USaQV`WSPS\ eW`R ÎQd]V !( 2O\OQV a]ZZ OcQV ROa :SaS>`]U`O[[ 3PcTX!YPeP a] USÉ\RS`b eS`RS\ ROaa RWSaS heSWbS /R`SaaS SW\USZSaS\ c\R O\UShSWUb eW`R

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Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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import java.io.*; public class Konvert02 { public static void main(String[] args) throws Exception { BufferedReader eingabe = new BufferedReader( new InputStreamReader(new FileInputStream( "Stream01.txt"), "CP1252")); BufferedWriter ausgabe = new BufferedWriter( new OutputStreamWriter(new FileOutputStream( "Stream02.txt"), "UTF-16")); int zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); System.out.println((char)zeichen); ausgabe.close(); } } 7\ RS[ >`]U`O[[ :^]eTac! a]`US\ RWS 0`ºQYS\YZOaaS\ 8]_dcBcaTP\ATPSTa Phe >dc_dcBcaTP\ATPSTa Tº` ROa 3\Q]RW\U d]\ &PWb/A177 \OQV CB4$ C\WQ]RS 2Oa 3`USP\Wa RWSaS` 9]\dS`bWS`c\U abSVb W\ RS` 2ObSW BcaTP\!cgc 2WSaS 2ObSW Wab W\aUS aO[b  0gbSa U`]z \SPS\ RS\ 0gbSa XS HSWQVS\ S\bVÉZb aWS OcQV SW\ AbScS`hSW QVS\ ÎQd]VT] id\

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Stand: 22.12.2005 13:39:00 ))

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ausgabe.write((char)zeichen);

2Oa 3`USP\Wa RWSaS` /caUOPS Wab RS` R]^^SZbS >TSWZ ZOcb 1VO`OQbS`aSb 1>&# ÎQd]V "( >`ºTS\ AWS eWS aWQV RS` 2ObSWW\VOZb RS` /caUOPSRObSW dS`É\RS`b eS\\ AWS Tº` RWS /caUOPS abObb CB4$ RS\ 1VO`OQbS`aSb CB4& PS\cbhS\ ÎQd]V #( ;caa Tº` RWS 3W\UOPSRObSW RS` 1VO`OQbS`aSb 1> # heW\US\R O\USUSPS\ eS`RS\ ]RS` Wab RWSa RWS AbO\RO`RO\\OV[S- 9O\\ OZa] RWS /\UOPS S\bTOZZS\- 2Oa \ÉQVabS >`]U`O[[ eW`R RS\ 7\VOZb RS` 2ObSW BcaTP\!cgc OZa dWS` C\WQ]RS HSWQVS\ W\bS`^`SbWS`S\ c\R RWSaS eWSRS` hc`ºQYTºV`S\ W\ /A1772ObS\ ?a^VaP\\ :^]eTac") 4X][TbT] e^] # D]XR^STiTXRWT] d]S X] 0B288 d\fP] ST[] import java.io.*; public class Konvert03 { public static void main(String[] args) throws Exception { BufferedReader eingabe = new BufferedReader( new InputStreamReader(new FileInputStream( "Stream02.txt"), "UTF-16")); BufferedWriter ausgabe = new BufferedWriter( new OutputStreamWriter(new FileOutputStream( "Stream03.txt"), "8859_1")); int zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); zeichen = eingabe.read(); ausgabe.write(zeichen); ausgabe.close(); } } 2Oa 3`USP\Wa \OQV /caTºV`c\U RSa >`]U`O[[a :^]eTac" abSVb W\ RS` 2ObSW BcaTP\"cgc /ca RS\  0gbSa RS` 3W\UOPSRObSW ec`RS\ eWSRS` RWS " 0gbSa RWS OcQV aQV]\ RWS 2ObSW BcaTP\ cgc VObbS 8Sbhb Yr\\bS\ eW` W\ SW\S[ eSWbS`S\ >`]U`O[[ RWSaS " 0gbSa OZa 7\bSUS`eS`b W\bS` ^`SbWS`S\ c\R O[ 0WZRaQVW`[ OZa 2ShW[OZhOVZ %" OcaUSPS\(

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Stand: 22.12.2005 13:39:00 ))

%#

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?a^VaP\\ :^]eTac#) 8]cTa_aTcXTaT] e^] # 0B2881hcTb P[b 8]cTVTafTac import java.io.*; public class Konvert04 { public static void main(String[] args) throws Exception { InputStream ein = new FileInputStream("Stream03.txt"); DataInput eingabe = new DataInputStream(ein); int zeichen = eingabe.readInt(); System.out.println(zeichen); } }

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Stand: 22.12.2005 13:39:00 ))

% 4X]VPQT d]S 0dbVPQT SdaRWU¶WaT] X^^_TaPcX^]

Writer writer = new OutputStreamWriter(fos, "UTF-8"); writer.write("testing\u2030"); writer.close(); } }

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writer.write(0x0078);



(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

%#

3PcTXeTaPaQTXcd]V

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))







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zahl = 25; System.out.println(a+ 5 / b); boolean b = a > 3;

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class Ausdruck02 { public static void main(String[] args) { // int z1 = (int)1.23 * 100; // Zuerst 1.23 in int konvertieren int z1 = (int) (123 * 100); // Zuerst multiplizieren System.out.println(z1); } }

#

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Stand: 22.12.2005 13:39:00 ))

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class Arithmetik02 { public static void main(String[] args) { int y = 15; System.out.println(y % 4); } } $

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ATRW]T] \Xc 6[TXcZ^\\P3PcT]ch_T] ES\\ PSW UO\hhOVZWUS\ 2ObS\bg^S\ SW\S 2WdWaW]\ Rc`QV _TaPcX^]T] \Xc 6[TXcZ^\\PIPW[T] public class Gleitkomma01 { public static void main(String[] args) { double zahl1 = 15.21; double zahl2 = 0.0; double erg = zahl1 / zahl2; System.out.println("Ergebnis ist: " + erg); } } DO`WOPZS d][ Bg^ 5ZSWbY][[O YS\\S\ \SPS\ X]UX]Xch \]QV SW\S\ O\RS`S\ a^ShWSZ ZS\ ES`b( \WQVb RSTW\WS`b Phe YSW\S HOVZ <]bO
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Stand: 22.12.2005 13:39:00 ))

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TWfDS`aW]\ eW`R RWS DO`WOPZS hcS`ab dS`É\RS`b c\R RO\\ PS\cbhb W\ RS` >]abTWf DS`aW]\ eW`R aWS S`ab PS\cbhb c\R RO\\ c[  []RWTWhWS`b >`OYbWaQVS /caeW`Yc\U VOb RWSaS C\bS`aQVSWRc\U \c` RO\\ eS\\ ROa 6]QVhÉVZS\ ]RS` @c\bS`hÉVZS\ W\ SW\S[ hcaO[[S\USaSbhbS\ /caR`cQY S`T]ZUb ?a^VaP\\ 3TZaT\T]c!) ?aÊUXg=^cPcX^] class Dekrement02 { public static void main(String[] args) { int a = 1; System.out.println(--a); } } ÎQd]VT] id\ ?a^VaP\\ 3TZaT\T]c! ÎQd]V ( Ò\RS`\ AWS ROa >`]U`O[[ 3TZaT\T]c!YPeP a] ROaa S`ab RS` OYbcSZZS DO `WOPZS\eS`b OcaUSUSPS\ c\R RO\OQV RWS @SQVS\]^S`ObW]\ OcaUSTºV`b eW`R ÎQd]V !( /\US\][[S\ AWS VOPS\ RS\ hcaO[[S\USaSbhbS\ /caR`cQY (  P RO\\ eW`R hcS`ab SW\S  OcT RS\ ES`b RS` DO`WOPZS\ P ORRWS`b c\R S`ab RO\OQV RWS 2WdWaW]\ Rc`QVUSTºV`b 0WbbS bSabS\ AWS RWSaS /\eSWac\U [Wb RS[ >`]U`O[[ 3TZaT \T]c! ÎQd]V "( 2OUSUS\ eW`R W\ RS[ hcaO[[S\USaSbhbS\ /caR`cQY '  O hcS`ab RWS 2WdWaW]\ Rc`QVUSTºV`b c\R O\aQVZWSzS\R P c[  S`VrVb 0WbbS bSabS\ AWS RWSaS /\ eSWac\U [Wb RS[ >`]U`O[[ 3TZaT\T]c! c\R dS`UZSWQVS\ AWS RWS 3`USP\WaaS 2Oa T]ZUS\RS >`]U`O[[ RS[]\ab`WS`b SW\S ÉV\ZWQVS /cTUOPS\abSZZc\U 3a hSWUb \]QV SW\[OZ RWS /caeW`Yc\US\ RS` c\bS`aQVWSRZWQVS\ AQV`SWPeSWaS\ PSW[ 7\Y`S[S\bWS`S\ C\R d]` OZZS[ [OQVb Sa RScbZWQV ROaa RWSaS /caR`ºQYS aQVeS` dS`abÉ\RZWQV aW\R c\R RSaeSUS\ PSaaS` dS`[WSRS\ eS`RS\ a]ZZbS\ ?a^VaP\\ 8]ZaT\T]c!) 0dbSa¶RZT bRWfTa eTabcÊ]S[XRW ]XRWc T\_U^W[T] public class Inkrement02 { public static void main(String args[]) { int x = 1; int y = 7 * ++x; // Präfix, Erst erhöhen, dann rechnen System.out.println(y); int z = 7 * x++; // Postfix Erst rechnen, dann erhöhen. System.out.println(z); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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EW` eS`RS\ RWSaS BVS[S\ W\ RS\ \OQVT]ZUS\RS\ 0SWa^WSZS\ RWaYcbWS`S\ Sa eS`RS\ TOZaQVS 0SWa^WSZS UShSWUb OPS` AWS eS`RS\ d]` OZZS[ OcQV RWS Y]``SYbS\ :rac\US\ YS\\S\ ZS`\S\ 3W\S eWQVbWUS @SUSZ UO\h hc /\TO\U( 2S` >`]U`O[[WS`S` a]ZZbS Tº` [ObVS[ObWaQVS 0S`SQV\c\US\ [Wb ES`bO\UOPS\ W\ EÉV`c\US\ h0 3c`]0Sb`ÉUS\ W[ HeSWTSZ RWS [WbUSZWSTS`bS 9ZOaaS 1XV3TRX\P[ PS \cbhS\ c\R \WQVb [Wb ^`W[WbWdS\ 2ObS\bg^S\ O`PSWbS\ `]U`O[[ a]ZZ ROa 3`USP\Wa Oca ! [cZbW^ZWhWS`b [Wb ! S``SQV\S\ c\R OcaUSPS\ ?a^VaP\\ 0aXcW\TcXZ%)  ETabdRW [TXSTa Xbc SPb 4aVTQ]Xb UP[bRW public class Arithmetik06 { public static void main(String args[]) double d2 = 1/3 * 3; System.out.println(d2); } }

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Stand: 22.12.2005 13:39:00 ))

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double d3 = 1d / 3d * 3; System.out.println(d3); } } ÎQd]V id\ ?a^VaP\\ 0aXcW\TcXZ& ÍPS`^`ºTS\ AWS ]P ROa `WQVbWUS 3`USP\Wa OcQV hc S`hWSZS\ Wab Rc`QV T]ZUS\RS /\eSW ac\U( S^dQ[T S" ,   "  "* - &!"! ÎQTa[PdU?a^Q[T\T 3W\ eSWbS`Sa >`]PZS[ YO\\ S\babSVS\ eS\\ ROa 3`USP\Wa SW\S` O`WbV[SbWaQVS\ =^S `ObW]\ [Wb 7\bSUS`eS`bS\ hc U`]z Wab Tº` RS\ USeÉVZbS\ 2ObS\bg^ 2O\\ Y][[b Sa hc[ ÍPS`ZOcT d]\ 7\bSUS`ES`bS\ ?a^VaP\\ 0aXcW\TcXZ')
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2Oaa W\ RWSaS[ 4OZZ RS` 1][^WZS` YSW\S EO`\c\U UWPb ]RS` a^ÉbSabS\a hc` @c\BW[S SW\ ÍPS`ZOcT4SVZS` US[SZRSb eW`R Wab SW\S ^`]PZS[ObWaQVS AQVeÉQVS W\ 8OdO 3a ZWSUb OZa] W\ RS` DS`O\be]`bc\U RSa >`]U`O[[WS`S`a ROTº` hc a]`US\ ROaa Oca`SW QVS\R A^SWQVS`^ZObh Tº` HeWaQVS\S`USP\WaaS c\R Tº` 3`USP\WadO`WOPZS\ hc` DS`Tº Uc\U abSVb ÎQd]V id\ ?a^VaP\\ 0aXcW\TcXZ' EWS [caa ROa >`]U`O[[ USÉ\RS`b eS`RS\ RO[Wb ROa 3`USP\Wa Y]``SYb Wab- 5WPb Sa SW\S\ ^`W[WbWdS\ 2ObS\bg^ RSaaS\ ES`bSPS`SWQV U`]z US\cU Wab- :rac\UaVW\eSWa( DS`acQVS\ AWS Sa [Wb [^]V `]U`O[[ RS[]\ab`WS`b eS`RS\ ?a^VaP\\ 0aXcW\TcXZ() ÎQTa[PdU QTX 8]cTVTach_T] public class Arithmetik09 { public static void main(String args[]) long z1 = Long.MAX_VALUE; long z2 = Long.MAX_VALUE; System.out.println(z1);

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System.out.println(z2); System.out.println(z1 * z2); } } 2WS SW\USPOcbS 9]\abO\bS ;^]V<0GNE0;D4 S\bVÉZb RS\ VrQVabS\ ES`b RS\ SW\S DO`WOPZS d][ Bg^ [^]V OcT\SV[S\ YO\\ ES\\ PSWRS 6rQVabeS`bS [cZbW^ZWhWS`b eS` RS\ `SWQVb \Obº`ZWQV RS` >ZObh Tº` ROa HeWaQVS\S`USP\Wa d][ Bg^ [^]V \WQVb Oca ;»bd]V) 0aQTXcT] \Xc :[PbbT] P]bcT[[T e^] _aX\XcXeT] 3PcT]ch_T] ES\\ [Wb HOVZS\ RWSaS` 5`rzS\]`R\c\U USO`PSWbSb eS`RS\ [caa PZSWPb \c` RWS SW\S ;rUZWQVYSWb( [O\ [caa RS\ 9ZOaaS\bg^ 1XV8]cTVTa dS`eS\RS\ 7\abO\hS\ S`hScUS\ c\R ;SbV]RS\ OcT`cTS\ ?a^VaP\\ 0aXcW\TcXZ ) 2[Pbb 1XV8]cTVTa P]bcT[[T e^] [^]VCh_T] import java.math.*; public class Arithmetik10 { public static void main(String args[]) { BigInteger z1 = new BigInteger("1234567890123456"); BigInteger z2 = new BigInteger("9876543210987654"); System.out.println(z1.multiply(z2)); } } &!"" FPad\ VXQc Tb d]eTabcÊ]S[XRWT 4aVTQ]XbbT QTX\ ÎQTa[PdU. 2Oa T]ZUS\RS >`]U`O[[ Wab Tº` RS\ <ScSW\abSWUS` \WQVb c\PSRW\Ub eWQVbWU /PS` Sa RS[]\ab`WS`b eWS RWS W\bS`\S\ /PZÉcTS PSW RS` /`WbV[SbWY aW\R c\R ZWSTS`b 3`YS\\b \WaaS Tº` RWS 7\bS`^`SbObW]\ d]\ Y`g^bWaQVS\ 3`USP\WaaS\ 2WSaS 7\T]`[ObW]\S\ Yr\\S\ OcQV hc[ `]U`O[[ DTQTa[PdU ZWSTS`b OZa 3`USP\Wa RS` /RRWbW]\ RS` PSWRS\ HOVZS\ ;WZZW]\S\ c\R & ;WZZW]\S\ "'"'$% '$ 2WS C`aOQVS ROTº` Wab ROaa ROa 3`USP\Wa hc U`]aa Wab Tº` RWS ! PWb SW\S` 7\bSUS`dO`WOPZS\ /PS` e]VS` Y][[b RWSaS aSZbaO[S HOVZ RWS hcaÉbhZWQV OcQV \]QV \SUObWd Wab- ?a^VaP\\ DTQTa[PdU ) 4aVTQ]Xb _Pbbc ]XRWc X] " QXcb 8]cTVTach_

public class Ueberlauf01 { public static void main(String args[]) int z1 = 2000000000; int z2 = 1800000000; System.out.println(z1 + z2); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]

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public class Arithmetik11 { public static void main(String args[]) double d1 = 0.17; float f1 = 0.000001f; System.out.println(d1 / f1); System.out.println(d1 * f1); } }

{

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import java.math.*; public class BigDecimal01 { public static void main(String args[]) { BigDecimal d1 = new BigDecimal("0.17"); BigDecimal d2 = new BigDecimal("0.000001"); System.out.println(d1.divide(d2)); System.out.println(d1.multiply(d2)); } } ÎQd]V id\ ?a^VaP\\ 1XV3TRX\P[ ÍPS`^`ºTS\ AWS ]P RWS /caUOPS RSa >`]U`O[[a OcQV [Wb T]ZUS\RS[ /caUOPSPSTSVZ [rUZWQV Wab( System.out.printf("%s", d1.divide(d2)); &!"$ Ad]Sd]V STa 4aVTQ]XbbT 8Sbhb PZSWPb \c` \]QV SW\S 4`OUS( C\R eWS Wab Sa [Wb RS[ /cT ]RS` /P`c\RS\ RS` 2ShW[OZabSZZS\- 5S`ORS W[ /ZZbOU c\R W[ YOcT[É\\WaQVS\ 0S`SWQV eW`R [Wb SW\S` dS`SW\PO`bS\ 5S\OcWUYSWb RS` 2ShW[OZabSZZS\ VW\bS` RS[ 9][[O USO`PSWbSb 0SW[ /`PSWbS\ [Wb EÉV`c\US\ VOb ROa 3`USP\Wa \]`[OZS`eSWaS \c` heSW AbSZZS\ VW\bS` RS[ 9][[O RO\OQV eW`R OcT ]RS` OPUS`c\RSb 2WS 9ZOaaS 1XV3TRX\P[ S`ZOcPb RS[ >`]U`O[[WS`S` RWS d]ZZS 9]\b`]ZZS ºPS` RWS dS` aQVWSRS\S\ ;rUZWQVYSWbS\ RSa @c\RS\a 3a UWPb W\aUSaO[b aWSPS\ dS`aQVWSRS\S ;rU ZWQVYSWbS\ 2WSaS aW\R ºPS`  YOcT[É\\WaQV `c\RS\ ROa VSWzb eS\\ RS`
(( merker2.doc

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import java.math.BigDecimal; class BigDecimal02 { static public void main(String[] args) { BigDecimal d1 = new BigDecimal(0.17); BigDecimal d2 = new BigDecimal(0.000001); BigDecimal d3 = new BigDecimal(0.0); d3 = d1.divide(d2, 2, BigDecimal.ROUND_HALF_UP); System.out.printf("%s\n", d3); System.out.println(d3); // Alternative Ausgabe // Multiplizieren d3 = d1.multiply(d2); // Anschließend runden BigDecimal d4 = d3.setScale(2, BigDecimal.ROUND_UP); // Ergebnis ausgeben System.out.printf("%s", d4); } } 2Oa T]ZUS\RS >`]U`O[[ Wab SW\ ^`W[WbWdS` 3c`]C[`SQV\S` Sa `SQV\Sb SW\S\ 2; ES`b c[ W\ 3c`] ?a^VaP\\ 4da^ ) ATRW]T] ^W]T SPb 4aVTQ]Xb id ad]ST]

public class Euro01 { public static void main(String args[]) double dm = 100.00; double euro = dm / 1.95583; System.out.println(euro); } }

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Stand: 22.12.2005 13:39:00 ))

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import java.math.*; public class Euro02 { public static void main(String args[]) { BigDecimal dm = new BigDecimal("100.00"); BigDecimal kurs = new BigDecimal("1.95583"); BigDecimal euro = dm.divide(kurs,2, BigDecimal.ROUND_HALF_UP); System.out.printf("%s", euro); } }

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import java.math.*; public class BigDecimal03 { public static void main(String[] args) { MathContext def = MathContext.DECIMAL32; BigDecimal start = new BigDecimal(100000); BigDecimal jahre = new BigDecimal(20); BigDecimal zinssatz = new BigDecimal("1.065"); // 6.5% BigDecimal total; total = zinssatz.multiply(jahre).multiply(start); System.out.println("Neues Kapital: " + total.toString()); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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public class Vergleich04 { public static void main(String[] args) float zahl1 = 0.1f; zahl1 = zahl1 / 0.0001f; System.out.println(zahl1 == 1000); System.out.println(zahl1); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

&# ;^VXbRWT >_TaPc^aT]

2WS <SUObW]\ W\ Y][^ZSfS\ 0SRW\Uc\US\ Wab [O\QV[OZ aQVeS` dS`abÉ\RZWQV 3W\ 0SWa^WSZ Wab T]ZUS\RS @SUSZ( ES\\ OcT SW\S[ 4ZcUbWQYSb \WQVb SW\ / ]RS` SW\ 0 abSVb c\R eS\\ ROa 2Obc[ \WQVb  ]RS`  Wab RO\\ Wab RS` 4ZcU \WQVb USQO\QSZb EWS PWbbS- EO\\ TW\RSb RS` 4ZcU abObb- ?a^VaP\\ 0dbSadRZ") =TVXTacT CTX[PdbbPVT] eTaZ]¶_UT] class Ausdruck03 { public static void main(String[] args) { char ticket = 'C'; int datum = 13; if (!(ticket == 'A') || !(ticket == 'B') && (datum == 11 || datum == 12)) System.out.println("Kein Flug"); else System.out.println("Flug"); } } 3W\S D\U^a\d[XTad]V W\ SW\S ^]aWbWdS /caaOUS [OQVb ROa >`]U`O[[ dS`abÉ\RZW QVS`( 2S` 4ZcU TW\RSb abObb eS\\ OcT RS[ BWQYSb / ]RS` 0 c\R OZa 2Obc[  ]RS`  abSVb 3W\ UºZbWUSa BWQYSb YO\\ OZa] SW\S RS` T]ZUS\RS dWS` 9][PW\ObW]\S\ S\bVOZbS\( / /  0 ]RS` 0  /ZZS O\RS`S\ aW\R c\UºZbWU ?a^VaP\\ 0dbSadRZ#) ?^bXcXeT CTX[PdbbPVT] eTaZ]¶_UT] class Ausdruck04 { public static void main(String[] args) { char ticket = 'B'; int datum = 12; if ((ticket == 'A' || ticket == 'B') && (datum == 11 || datum == 12)) System.out.println("Flug"); else System.out.println("Kein Flug"); } } 2WS @SUSZ Tº` RWS C[T]`[c\U \S\\b [O\ RWS ST <^aVP]bRWTATVT[( Oca ((not (a or b) eW`R Oca (not (a and b)) eW`R

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

&# ;^VXbRWT >_TaPc^aT]

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{

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]

2Oa \ÉQVabS 0SWa^WSZ hSWUb SW\S ÉV\ZWQVS /cTUOPS\abSZZc\U 2c`QV RS\ Z]UWaQVS\ =^S`Ob]` jj eW`R RWS /caeS`bc\U OPUSP`]QVS\ eS\\ ROa 3`USP\Wa heSWTSZaT`SW TSab abSVb ?a^VaP\\ BRT!) BW^ac2dc4eP[dPcX^] B24 \Xc >34A>_TaPc^a public class Sce02 { public static void main(String args[]) throws Exception int a = 0; if (a==0 || (a = System.in.read()) > 0) System.out.println(a); } }

{

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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class BitVerknuepf01 { public static void main(String[] args) char zeichen1 = 'A'; char zeichen2 = 'B'; int erg;

{

erg = zeichen1 & zeichen2; System.out.print(erg + " = "); System.out.println((char)erg);

// UND

erg = zeichen1 | zeichen2; System.out.print(erg + " = "); System.out.println((char)erg);

// ODER

erg = zeichen1 ^ zeichen2; System.out.print(erg + " = "); System.out.println((char)erg);

// XOR

} } "!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

& 0dbSa¶RZT eTabcTWT] Tg_aTbbX^]

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

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public class Zuweisung04 { public static void main(String args[]) float s1 = 5.0; } }

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public class Zuweisung05 { public static void main(String args[]) { String str = "Bahnhofstr."; int nr = 125; System.out.println(str + nr); } } 0SW[ /cT`cT RS` ;SbV]RS _aX]c[] eS`RS\ heSW /`Uc[S\bS ºPS`USPS\ SW\ BcaX]V /`Uc[S\b c\R SW\ X]c/`Uc[S\b 2WS ES`bS [ºaaS\ UZSWQV\O[WU US[OQVb eS`RS\ RS\aSZPS\ Bg^ PSY][[S\ c\R RWSa USaQVWSVb Ocb][ObWaQV ]V\S Sf^ZWhWbS /\UOPS Rc`QV RS\ >`]U`O[[WS`S` eSWZ YSW\ 7\T]`[ObW]\adS`Zcab RORc`QV S\babSVb

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Stand: 22.12.2005 13:39:00 ))

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public class Zuweisung06 { public static void main(String args[]) { int x = 1; int y = 10; x += 13; // x = x + 13; System.out.println(x); y *= y + 5; // y = y * (y + 5); System.out.println(y); } } =Pe]VZ ROa /`PSWbS\ [Wb RWSaS\ Y][PW\WS`bS\ =^S`Ob]`S\ hc SW\S` dS`Yº`hbS\ AQV`SWPeSWaS TºV`b eW`R RS` 3W\aObh \WQVb S[^T]VZS\ eSWZ RWS :SaPO`YSWb RO`c\bS` ZSWRSb 2WSa RS[]\ab`WS`b PSa]\RS`a RWS d]`ZSbhbS HSWZS RSa >`]U`O[[a IdfTX bd]V%YPeP

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public class Zuweisung07 { public static void main(String args[]) { int x = 1; int y = 10; x = y = 0; System.out.println("x= " + x + " y= " + y); } } 4º` RWSaS 1]RWS`c\U Wab SW\S eWQVbWUS 0Sa]\RS`VSWb hc PSOQVbS\( RWS @SWVS\T]ZUS RS` /caTºV`c\U Wab \WQVb  eWS a]\ab OZZUS[SW\ ºPZWQV  d]\ ZW\Ya \OQV `SQVba a]\RS`\ #!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

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public class If01 { public static void main(String args[]) throws Exception if (5 < 3) { System.out.println("5 ist kleiner 3"); } else { System.out.println("5 ist nicht kleiner als 3"); } } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

'#

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public class If02 { public static void main(String args[]) { char c = 'A'; if (Character.isUpperCase(c)) { System.out.println("Der Zeichen " + c + " ist ein Grossbuchstabe"); } } } ?a^VaP\\ 8U") 1TXb_XT[ U¶a ifTXbTXcXVT 850]fTXbd]V public class If03 { public static void main(String args[]) { char c = 'a'; if (Character.isUpperCase(c)) { System.out.println("Der Zeichen " + c + " ist ein Grossbuchstabe"); } else { System.out.println("Das Zeichen " + c + " ist ein Kleinbuchstabe"); } } } 2Oa T]ZUS\RS 0SWa^WSZ S\bVÉZb SW\S\ VW\bS`VÉZbWUS\ 4SVZS` 7\ RS` HSWZS ! abSVb SW\ AS[WY]Z]\ RWSaSa eW`Yb eWS SW\S :SS`O\eSWac\U c\R PSS\RSb RWS 7T/\eSWac\U ?a^VaP\\ ;TTaP]fTXbd]V ) 1T[XTQcTa PQTa bRWfTa id T]cSTRZT]STa 5TW[Ta public class Leeranweisung01 { public static void main(String[] args) { if (3>5); System.out.println("3 ist größer 5"); } } #%

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Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

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public class If04 { public static void main(String args[]) { boolean fehler = false; int monat = 12; if ((!fehler) && (monat > 0) && (monat < 13)) System.out.println("Alles o.k."); else System.out.println("Fehler aufgetreten oder Monat falsch"); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

'#

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 -KYINGINZKRZK/,'T]KOY[TM <]QV Y][^ZSfS` eW`R SW\S XU/\eSWac\U eS\\ W\\S`VOZP RSa 8O0Z]QYa ]RS` W\\S` VOZP RSa <SW\0Z]QYa SW\S eSWbS`S XU/\eSWac\U abSVb 2WS /cTUOPS RSa \OQVT]ZUS\ RS\ >`]U`O[[a a]ZZ Sa aSW\ heSW HOVZS\ hc dS`UZSWQVS\ ?a^VaP\\ 8U$) 8U0]fTXbd]V X]]TaWP[Q STb =TX]IfTXVTb bRW[TRWc R^SXTac public class If05 { public static void main(String args[]) { int a = 2500; int b = 1500; if (a < b) { System.out.println("a ist kleiner als b "); if (b > 1000) System.out.println("und b ist groesser als 1000"); } else { System.out.println("a ist nicht kleiner als b "); if (b > 1000) System.out.println("und b ist groesser als 1000"); } } }

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#'

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

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public class If07 { public static void main(String args[]) { int dollar = 0; boolean kreditkarte=true; if (!kreditkarte) { if (dollar == 0) System.out.println("Weder Dollar noch Karte"); } else System.out.println("Kreditkarte vorhanden"); } } 2WS @SUSZ eWS RWS ;SV`RScbWUYSWb OcTUSZrab eW`R a]ZZbS OcQV Oca RS` AQV`SWPeSWaS S`YS\\PO` eS`RS\ `WQVbWU SW\`ºQYS\ ÎQd]V id\ ?a^VaP\\ 8U& 7\ RWSaS[ >`]U`O[[ PSabSVb RS` 8OHeSWU RSa S`abS\ 7Ta Oca \c` SW\S` /\eSWac\U 2SaeSUS\ Yr\\bS [O\ TÉZaQVZWQVS`eSWaS OcT RWS 7RSS Y][[S\ RWS USaQVeSWTbS\ 9ZO[[S`\ W\ HSWZS\ # c\R & eSUhcZOaaS\ 4]`[OZ Wab ROa W\ =`R\c\U Z]UWaQV ZSW RS` TOZaQV 2WS /caTºV`c\U ZÉcTb RO\\ \É[ZWQV \WQVb a] eWS Sa RWS 3W\`ºQYc\U S` eO`bS\ ZÉzb 0WbbS bSabS\ AWS RWSa Rc`QV S\ba^`SQVS\RS >`]U`O[[É\RS`c\U 2Oa \OQVT]ZUS\RS >`]U`O[[ 8U' a]ZZ T]ZUS\RS /cTUOPS ZraS\( Hc\ÉQVab a]ZZ ºPS` ^`ºTb eS`RS\ ]P Sa abW[[b ROaa O YZSW\S` Wab OZa P ES\\ ROa abW[[b a]ZZ OPUST`OUb eS`RS\ ]P P ,  Wab c\R OPVÉ\UWU ROd]\ a]ZZ hcaÉbhZWQV OcaUSUSPS\ eS`RS\( P Wab U`rzS`  ;»bd]Vbe^abRW[PV UTW[TaWPUc) public class If08 { public static void main(String args[])

{

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'#

ETaifTXVd]VT] BT[TZcX^] 0dbfPW[

int a = 2500; int b = 1500; if (a < b) if (b > 1000) System.out.println("a ist kleiner b " + "und b ist groesser als 1000"); else System.out.println("a ist nicht kleiner b "); System.out.println("Programmende"); } } ÎQd]V id\ ?a^VaP\\ 8U' 2S` :rac\Uad]`aQVZOU 8U'YPeP Wab TOZaQV Sa eW`R ZSRWUZWQV >`]U`O[[S\RS OcaUS USPS\ 0WbbS ^`ºTS\ AWS e] RS` 4SVZS` ZWSUb c\R Y]``WUWS`S\ AWS ROa >`]U`O[[ 6W\eSWaS hc` :rac\U( 2Oa >`]PZS[ RSa RO\UZW\U SZaS YO\\ \c` d]`Y][[S\ eS\\ RWS /\eSWac\US\ \WQVb Rc`QV 0Z]QYYZO[[S`\ PSU`S\hb ec`RS\



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public class Fragezeichen01 { public static void main(String[] args)

{ $



(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

System.out.println((6 > 5) ? 17 + 5 : 25 / 5); } } 2WS PSWRS\ \ÉQVabS\ 0SWa^WSZS hSWUS\ ROaa RS` 0SRW\Uc\Ua]^S`Ob]` SW\S Y][^OYbS /ZbS`\ObWdS Tº` SW\S\ OcaTºV`ZWQVS\ 7T0STSVZ aSW\ YO\\ ?a^VaP\\ 5aPVTiTXRWT]!) Id]ÊRWbc SXT XU0]fTXbd]V public class Fragezeichen02 { public static void main(String[] args) String text = " " ; if (6 > 5) text = "Groesser"; else text = "Kleiner/Gleich"; System.out.println(text); } }

{

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public class IfOperator02 { public static void main(String[] args) { System.out.println((6 > 5) ? "groesser" : "kleiner/gleich"); } }

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$

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'#

ETaifTXVd]VT] BT[TZcX^] 0dbfPW[

public class Switch01 { public static void main(String[] args) { System.out.println("Bitte geben Sie den Monat 1.Halbjahr ein: "); Scanner eingabe = new Scanner(System.in); int monat = eingabe.nextInt(); if (monat == 1) System.out.println("Januar"); else if (monat == 2) System.out.println("Februar"); else if (monat == 3) System.out.println("März"); else if (monat == 4) System.out.println("April"); else if (monat == 5) System.out.println("Mai"); else if (monat == 6) System.out.println("Juni"); else System.out.println("Falsche Eingabe"); } }

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Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

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?a^VaP\\ BfXcRW!) <^]PcbcTgcT U¶a SPb  7P[QYPWa \Xc bfXcRW PdbVTQT] import java.util.*; public class Switch02 { public static void main(String[] args) { System.out.println("Bitte Monat eingeben (1.Halbjahr)"); Scanner eingabe = new Scanner(System.in); int monat = eingabe.nextInt(); switch (monat) { case 1: System.out.println("Januar"); break; case 2: System.out.println("Februar"); break; case 3: System.out.println("Maerz"); break; case 4: System.out.println("April"); break; case 5: System.out.println("Mai"); break; case 6: System.out.println("Juni"); break; default: System.out.println("Der Monat ist falsch"); } System.out.println("Programm-Ende"); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

'#

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import java.util.*; public class Switch03 { public static void main(String[] args) throws Exception { System.out.println("Bitte einen Buchstaben eingeben:"); Scanner eingabe = new Scanner(System.in); byte c = eingabe.nextByte(); switch (c) { case 'A': System.out.println("a"); case 'B': System.out.println("b"); case 'C': System.out.println("c"); case 'E': System.out.println("e"); default : System.out.println ("Alle anderen Buchstaben"); } } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

switch (monat) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: tage = 31; break; case 4: case 6: case 9: case 11: tage = 30; break; case 2: if ( ((jahr % 4 == 0) && !(jahr % 100 == 0)) || (jahr % 400 == 0) ) tage = 29; else tage = 28; break; } System.out.println("Anzahl der Tage = " + tage); } } 2WS ZSS`S\ RPbT9ZOcaSZ\ eW`YS\ eWS SW\ SW\aQVZWSzS\RSa =RS` A]POZR RS` /caR`cQY [Wb RS` 9]\abO\bS\ ºPS`SW\abW[[b PSUW\\b RWS /caTºV`c\U OZZS` \OQVT]ZUS\RS\ /\ eSWac\US\ PWa hc[ 3\RS RSa AeWbQVAbObS[S\ba c\R aWS eW`R \c` OPUSP`]QVS\ eS\\ SW\ QaTPZAbObS[S\b OcTb`Wbb T]d\Ch_T] X] bfXcRW0]fTXbd]V eTafT]ST] <SPS\ RS\ \]`[OZS\ 9ZOaaS\ UWPb Sa OcQV T]d\Bg^S\ RWS SPS\TOZZa W\ 9ZOaaS\ PSaQV`WSPS\ eS`RS\ Yr\\S\ 3`ZÉcbS`c\US\ aWSVS 9O^WbSZ '  3\c[Bg^S\ eS` RS\ OcQV /cThÉVZc\Uabg^S\ US\O\\b eSWZ RWS [rUZWQVS\ ES`bS RWS SW\S DO`WOPZS RWSaSa Bg^a OcT\SV[S\ YO\\ W\ 4]`[ SW\S` /cThÉVZc\U O\USUSPS\ eS`RS\ 2O\\ YO\\ SW\S DO`WOPZS d][ T]d\Bg^ OZa RPbTES`b PS\cbhb eS`RS\ ?a^VaP\\ BfXcRW$) 0QUaPVT e^] TX]T\ T]d\Ch_ PQWÊ]VXV \PRWT] public class Switch05 { enum Wochentage {montag, dienstag, mittwoch, donnerstag, freitag, samstag, sonntag} public static void main (String[] args) { $$

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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Wochentage w = Wochentage.samstag; switch(w) { case montag: System.out.println("Wochenbeginn"); case samstag: System.out.println("Arbeitsfrei"); } } } 4OhWb( 2WS bfXcRW/\eSWac\U eW`R SW\USaSbhb eS\\ d][ ES`b SW\S` \c[S`WaQVS\ DO `WOPZS\ RWS YO\\ OcQV SW\ T]d\Bg^ aSW\ [SV`S`S /ZbS`\ObWdS\ OPVÉ\US\ D]`Oca aSbhc\U Wab( 3a eW`R RS` ES`b SW\S` UO\hhOVZWUS\ DO`WOPZS\ OPUST`OUb QhcT bW^ac RWPa ^STa X]c [^]V Wab \WQVb S`ZOcPb



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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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public class While01 { public static void main(String[] args) int zahl = 1; while (zahl < 5) System.out.println(zahl++); } }

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public class While02 { public static void main(String[] args) char buchstabe = 'a'; while (buchstabe <= 'z') System.out.println(buchstabe++); } }

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import java.util.*; public class While04 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); String zeile; while (true) { System.out.println("Bitte Text eingeben:"); zeile = eingabe.next(); System.out.println("Eingegeben wurde: " + zeile); } } } 2Oa >`]U`O[[ FWX[T#YPeP ZWSab hSWZS\eSWaS d]\ BhbcT\X] 2WS Er`bS` SW\S` 3W\ UOPShSWZS eS`RS\ OcTUSa^ZWbbSb c\R W\ XSeSWZa SW\S` SWUS\S\ HSWZS OcaUSUSPS\ ^O` aS\ RS` 3W\UOPShSWZS ESWZ RWS 0SRW\Uc\U RS` fWX[TAQVZSWTS ROa :WbS`OZ cadT S\b

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VÉZb Wab aWS W[[S` eOV` 2SaeSUS\ YO\\ RWSaS 3\RZ]aaQVZSWTS \c` USeOZbaO[ c\bS` EW\R]ea [Wb 1B@:1 OPUSP`]QVS\ eS`RS\ 7[ >`]U`O[[ FWX[T$YPeP eS`RS\ d][ 0SRWS\S` HOVZS\ O\UST]`RS`b RWS W[ >`] U`O[[ a]ZO\US OcTORRWS`b eS`RS\ PWa RWS Ac[[S RS\ ES`b d]\  S``SWQVb VOb ?a^VaP\\ FWX[T$) IPW[T] PdUbd\\XTaT] import java.util.*; public class While05 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); int zahl; int summe = 0; while (summe < 100) { System.out.println("Bitte Zahl eingeben:"); zahl = eingabe.nextInt(); summe = summe + zahl; } System.out.println("Die Summe betraegt: " + summe); } } ?a^VaP\\ FWX[T%) ;^VXbRWTa 5TW[Ta public class While06 { public static void main(String[] args) { boolean ichBinMillionaer = false; while (ichBinMillionaer == true); { System.out.println("Ich bin Millionaer"); } } } 2Oa >`]U`O[[ UWPb eS\\ AWS Sa US\Oc a] OPbW^^S\ eWS d]`USUSPS\ RS\ BSfb Oca(  Ich bin Millionaer   OPS` ROa Wab USZ]US\ RS\\ RWS DO`WOPZS XRW1X]<X[[X^ ]PTa S\bVÉZb RS\ ES`b UP[bT ÎQd]V id\ ?a^VaP\\ FWX[T% DS`acQVS\ AWS aSZPababÉ\RWU RS\ 4SVZS` hc TW\RS\ c\R Y]``WUWS`S\ AWS ROa >`] U`O[[ :rac\UaVW\eSWa( 2Oa >`]U`O[[ ;TTaP]fTXbd]V YPeP W[ /PaQV\Wbb &" S\bVÉZb RS\aSZPS\ 4SVZS`

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public class Do01 { public static void main(String[] args) int zahl = 5; do System.out.println(zahl++); while (zahl < 5); } }

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public class While99 { public static void main(String[] args) int zahl = 5; while (zahl > 0) System.out.println(zahl--); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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sum = sum + zahl; } System.out.println("Summe ist = " + sum); } } ÎQd]V

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public class For04 { public static void main(String[] args) { for (int i=0; i < 0;) System.out.println("Ich werde nie ausgegeben"); System.out.println("Programmende"); } } 4OhWb( 2WS 4]`AQVZSWTS Wab SW\S Y]^TUSabScS`bS SW\S OPeSWaS\RS AQVZSWTS  W\ RWSaS` 6W\aWQVb dS`UZSWQVPO` [Wb RS` fWX[TAQVZSWTS eSWZ RWS >`ºTc\U RSa P]]ZSaQVS\ /ca R`cQYa d]` 3W\b`Wbb W\ RWS AQVZSWTS S`T]ZUb 1Tb^]STaWTXcT]) •

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Stand: 22.12.2005 13:39:00 ))

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?a^VaP\\ 5^a$) 8]XcXP[XbXTad]V PdvTaWP[Q <^SXUXZPcX^] X]]TaWP[Q public class For05 { public static void main(String[] args) { int i= 0; for (; i < 1;) { System.out.println("Ich werde einmal ausgegeben"); i++; } } } 3W\S eSWbS`S 0Sa]\RS`VSWb hSWUb ROa T]ZUS\RS >`]U`O[[ 2WS S`abS c\R RWS R`WbbS 9][^]\S\bS W[ 9]^T SW\S` 4=@AQVZSWTS Yr\\S\ Oca SW\S` /cThÉVZc\U d]\ [SV`S `S\ BSWZOcaR`ºQYS\ PSabSVS\ 2WS SW\hSZ\S\ BSWZOcaR`ºQYS eS`RS\ eWS US\S`SZZ PSW /cThÉVZc\US\ W\ 8OdO RO\\ Rc`QV 9][[O OPUSb`S\\b ?a^VaP\\ 5^a%) `]U`O[[dS`VOZbS\ eS\\ RWS PSWRS\ 0SRW\Uc\US\ [Wb RS[ C<2=^S`Ob]` dS`Y\º^Tb eS`RS\- 2Oa \ÉQVabS >`]U`O[[ hSWUb SW\S TSVZS`VOTbS >`ºTPSRW\Uc\U 2WS >`ºTc\U OcT AQVZSW TS\S\RS a]ZZbS US\S`SZZ d]\ 5O\hhOVZS\ OPVÉ\UWU US[OQVb eS`RS\  \WQVb hc S[^ TSVZS\ Wab RWS /PT`OUS SW\Sa 5ZSWbY][[OeS`ba 2WSa YO\\ hc 3\RZ]aaQVZSWTS\ TºV`S\ ?a^VaP\\ 5^a&) D]VTf^[[cT 4]S[^bbRW[TXUT fTX[ 6[TXcZ^\\PFTac d]VT]Pd public class For07 { public static void main(String[] args)throws Exception for (float i=0; i != 5.0; i=i+0.2f) { System.out.println(i); if (i > 5) break; } } } %$

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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public class For08 { public static void main(String[] args) { for (int zahl1 = 1; zahl1 <= 3; zahl1++) { for (int zahl2 = 1; zahl2 <=5; zahl2++) System.out.println(zahl1 + " " + zahl2); } } } 2WS /caUOPS RSa >`]U`O[[a 5^a'YPeP aWSVb eWS T]ZUb Oca( 1 1 2 2 3 3

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;»bd]Vbe^abRW[PV public class For09 { public static void main(String[] args) { for (int i=0; i < 3; i++) { System.out.println("Aussenschleife"); for (int j = 0; j < 2; j++) System.out.println("Innenschleife"); } } } %&

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public class While08 { public static void main(String[] args) { int zahl1 = 1; while (zahl1 <= 3) { int zahl2 = 1; while (zahl2 <=5) { System.out.println(zahl1 + " " + zahl2); zahl2++; } zahl1++; } } } 7\aPSa]\RS`S Tº` ROa /`PSWbS\ [Wb [SV`RW[S\aW]\OZS\ /``Oga PWSbS\ USaQVOQVbSZbS 4=@AQVZSWTS\ SW\S aSV` ºPS`aWQVbZWQVS AQV`SWPeSWaS aWSVS 9O^WbSZ !( /``Oga



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Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

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B_ad]V0]fTXbd]VT] QaTPZ R^]cX]dT

for (; true ;) { ... if (....) break; }

// Die komplette Schleife wird beendet

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{

// 10mal die Schleife ausführen // Diesen Durchlauf abbrechen

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public class Continue01 { public static void main(String[] args) { for (int i= -10; i <11; i++) { if (i == 0) continue; // Laufende Iteration beenden System.out.println("Kehrwert von " + i + " = " + 1.0 / i); } } }

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{ &



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Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

int zahl; int summe = 0; for (int i=0; i < 3; i++) { System.out.println("Aussenschleife " + i); for (int j=0; j < 4; j++) { if (i == 1) continue; System.out.println("Innenschleife " + i); } } } } ES\\ RWS /cTUOPS\abSZZc\U Sa XSR]QV dS`ZO\Ub ROaa OZZS AQVZSWTS\ OPUSP`]QVS\ eS`RS\ [ºaaS\ a] YO\\ RWSa [Wb RS[ 0SaQV`WTbS\ d]\ AQVZSWTS\ Rc`QV :OPSZ aSV` ZSWQVb `SOZWaWS`b eS`RS\

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continue hauptschleife;

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' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb





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Stand: 22.12.2005 13:39:00 ))

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;»bd]Vb\dbcTa U¶a BRW[TXUT]

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Stand: 22.12.2005 13:39:00 ))

' 0]fTXbd]VT] Z^SXTaT] bcPcT\T]cb

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import java.util.Scanner; public class Next04 { public static void main (String[] args) { Scanner cons = new Scanner(System.in); String ein = null; System.out.println("Bitte Text eingeben: "); while (cons.hasNext()) { ein = cons.next(); if (ein.equals("ende")) break; System.out.println("Eingabe ist " + ein); } System.out.println("Programmende"); } } 3a UWPb SW\WUS 8OdOAbO\RO`RYZOaaS\ RWS S\bVOZbS\ Tº` RWS 7bS`ObW]\ PSa]\RS`S ;SbV] RS\ RWS ROa >`]PSZSaS\ Rc`QVTºV`S\ 7\ RWSaS[ 0SWa^WSZ Wab ROa RWS ;SbV]RS WPb =Tgc RS` 9ZOaaS BRP]]Ta AWS ZWSTS`b OZa 3`USP\Wa RSa D]`OcaZSaS\a RS\ ES`b cadT eS\\ RS` 3W\UOPSab`][ \]QV eSWbS`S 2ObS\ S\bVÉZb ]RS` UP[bT eS\\ YSW\S 2ObS\ [SV` d]`VO\RS\ aW\R &$

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import java.util.*; public class Next07 { public static void main (String[] args) { String s ="Dies ist nur ein Test"; StringTokenizer st = new StringTokenizer(s); while (st.hasMoreTokens()) System.out.println(st.nextToken()); } }



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class TopDown01a { public static void main(String[] args) { int erg = potenzieren(5,3); System.out.println(erg); } static int potenzieren(int z1, int z2) { int erg = z1; if (z2 == 0) return(1); for (; z2>1; z2--) { erg = erg * z1; } return erg; } } ES\\ RWSaSa @c[^T^`]U`O[[ Tc\YbW]\WS`b eW`R aQV`WbbeSWaS XSeSWZa SW\S eSWbS`S ;SbV]RS VW\hcUSTºUb c\R USbSabSb h0 W[ heSWbS\ AQV`Wbb RWS ;SbV]RS PdbVPQT c\R RO\OQV W[ R`WbbS\ AQV`Wbb RWS ;SbV]RS TX]VPQT S`UÉ\hb

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3Pb Z^\_[TccT ?a^VaP\\ TabcT[[c X] # BRWaXccT] PS import java.io.*; class TopDown01d { public static void main(String[] args) { System.out.println("Bitte eine Zahl als Basis eingeben: "); int basis = eingabe(); System.out.println("Bitte eine Zahl als Exponent eingeben: "); int exponent = eingabe(); int erg = potenzieren(basis, exponent); ausgabe(erg); } static int eingabe() {

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Stand: 22.12.2005 13:39:00 ))

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String str = null; try { str = new DataInputStream(System.in).readLine(); } catch (Exception e) { System.out.println(e); } return Integer.parseInt(str); } static int potenzieren(int z1, int z2) { int erg = z1; if (z2 == 0) return(1); for (; z2>1; z2--) { erg = erg * z1; } return erg; } static void ausgabe(int erg) { System.out.println("Das Ergebnis ist: " + erg); } }

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static int eingabe() { Scanner ein = new Scanner(System.in); int zahl = 0; try { zahl = ein.nextInt(); } catch (Exception e) { System.out.println(e); '#

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(( merker2.doc

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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(( merker2.doc

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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(( merker2.doc

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(( merker2.doc

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(( merker2.doc

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))





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Stand: 22.12.2005 13:39:00 ))


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Stand: 22.12.2005 13:39:00 ))


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Stand: 22.12.2005 13:39:00 ))


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Stand: 22.12.2005 13:39:00 ))

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class System01 { public static void main(String[] args) throws Exception { String name; name = System.getProperty("user.name"); System.out.println(name); } } F^id Z»]]T] bcPcXR X\_^ac0]fTXbd]VT] VT]dcic fTaST]. 3W\S DO`WO\bS Wab RS` 3W\aObh d]\ bcPcXR7[^]`b 2ORc`QV YO\\ RS` /cT`cT d]\ abObW aQVS\ ;S[PS`\ SW\S` 9ZOaaS dS`SW\TOQVb eS`RS\ ?a^VaP\\ BhbcT\!) BcPcXR8\_^ac Ta[PdQc d]`dP[XUXiXTacT] IdVaXUU import static java.lang.System.*; class System02 { public static void main(String[] args) throws Exception { String name; name = getProperty("user.name"); out.println(name); } } 2S` D]`bSWZ Wab RWS Yº`hS`S AQV`SWPeSWaS PSW[ @STS`S\hWS`S\ d]\ bcPcXR;S[PS`\



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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))


2c`QV RS\ 3W\aObh d]\ E`O^^S`9ZOaaS\ S`VÉZb RS` >`]U`O[[WS`S` hcaÉbhZWQVS DS`O` PSWbc\Ua[rUZWQVYSWbS\ RS\\ RWS 9ZOaaS\ S\bVOZbS\ ;SbV]RS\ RWS hcaÉbhZWQV hc RS\ SW\USPOcbS\ =^S`Ob]`S\ OcT RWSaS 2ObS\bg^S\ ]^S`WS`S\ A] S\bVÉZb RWS 9ZOaaS 8]cT VTa h0 RWS T]ZUS\RS ;SbV]RS( static int

parseInt(String s)

Parses the string argument as a signed decimal integer.

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"


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object.methode1(object.methode2());

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))




'XHKOZKTSOZ3KZNUJKTJKXSOZMKROKLKXZKT1RGYYK6XUVKXZOKY

0Sa]\RS`a W[ >OQYOUS YPePdcX[ aW\R SW\WUS 9ZOaaS\ S\bVOZbS\ RWS OZa a] US\O\\bS CbWZWbWSa 6WZTaYZOaaS\ PShSWQV\Sb eS`RS\ c\R RS[ >`]U`O[[WS`S` 2WS\abS Tº` VÉc TWU O\TOZZS\RS /`PSWbS\ O\PWSbS\ A] UWPb Sa RWS 9ZOaaS ?a^_TacXTb RWS Sa [Wb SW\TO QVS\ ;SbV]RS\OcT`cTS\ S`[rUZWQVb W[ A^SWQVS` 2ObS\ [Wb AcQVPSU`WTTS\ hc YS\\ hSWQV\S\ a] ROaa SW\ 2W`SYbhcU`WTT RO`OcT [rUZWQV Wab 2WS 2ObS\ eS`RS\ W\ 4]`[ d]\ heSW Ab`W\Ua USa^SWQVS`b e]PSW RS` S`abS Ab`W\U RS\ AcQVPSU`WTT AQVZºaaSZ YSg c\R RS` heSWbS Ab`W\U RS\ ROhc USVr`S\RS\ ES`b dOZcS S\bVÉZb 2WSaS /`b RS` A^SWQVS`c\U Wab Tº` dWSZS /cTUOPS\abSZZc\US\ VWZT`SWQV h0 eS`RS\ >O `O[SbS` heWaQVS\ VSbS`]US\S\ AgabS[S\ VÉcTWU W\ RS` 9SgDOZcS4]`[ OcaUSbOcaQVb ]RS` AgabS[eS`bS W\ RWSaS` 4]`[ USa^SWQVS`b c\R OPUST`OUb h0 W\ 3\dW`]\[S\b DO`WOPZS\ ?a^VaP\\ ?a^_TacXTb ) 0aQTXcT] \Xc :ThEP[dT?PPaT] import java.util.*; public class Properties01 { public static void main (String[] args) { Properties prop = new Properties(); prop.setProperty("name", "Roman Merker"); prop.setProperty("beruf", "Programmierer"); prop.setProperty("ort", "Steinfurt"); prop.list(System.out); } } ÎQd]V id\ ?a^VaP\\ ?a^_TacXTb 2WS 9ZOaaS ?a^_TacXTb PWSbSb Y][T]`bOPZS ;rUZWQVYSWbS\ Tº` RS\ 2W`SYbhcU`WTT OcT SW\ hSZ\S >`]^S`bWSa 2OPSW [caa ZSRWUZWQV RS` AQVZºaaSZ YSg OZa AcQVPSU`WTT O\USUSPS\ eS`RS\ 0WbbS É\RS`\ AWS ROa >`]U`O[[ a] ROaa \c` RS` E]V\]`b OcaUSUSPS\ eW`R [rUZWQVab Rc`QV SW\S\ USaQVOQVbSZbS\ ;SbV]RS\OcT`cT :rac\Uad]`aQVZOU Tº` RWS /caUOPS( System.out.println(prop.getProperty("ort"))* 2Oa T]ZUS\RS >`]U`O[[ hSWUb eWS Y][^OYb SW\ /caR`cQY Q]RWS`b eS`RS\ YO\\ RS` SW\S\ USaQVOQVbSZbS\ ;SbV]RS\OcT`cT S\bVÉZb ?a^VaP\\ ?a^_TacXTb!) 6TbRWPRWcT[cTa
!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"
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{

// Primitive Datentypen runden / aufbereiten double zahl1 = 0.15780003; DecimalFormat df = new DecimalFormat("##,##0.00"); System.out.println(df.format(zahl1)); // Komfortabler mit BigDecimal und MethContext BigDecimal zahl2 = new BigDecimal(0.15780003); int nachkomma = 3; MathContext mc = new MathContext(nachkomma, RoundingMode.HALF_UP); BigDecimal erg = zahl2.round(mc); System.out.println(erg); } } 4º` ROa /`PSWbS\ [Wb RS` DO`WOPZS\ iPW[! eS`RS\ \OQVSW\O\RS` R`SW ;SbV]RS\ OcT US`cTS\( hc\ÉQVab eW`R [Wb ]Tf SW\S 7\abO\h RS` 9ZOaaS
!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))


;»bd]Vbe^abRW[PV)
import java.text.DecimalFormat; import java.math.*; class Zahlen02 { public static void main(String[] args) { BigDecimal zahl1 = new BigDecimal(0.15780003); System.out.println(zahl1.round(new MathContext(3, RoundingMode.HALF_UP))); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))




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{

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# 4XVT]T
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!#

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))


double d = obj1.liesDouble(); System.out.println(d); } }

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))


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class Methode12 { public static void main (String[] args) { double zahl = 123.45; aendern(zahl); System.out.println(zahl); } static public void aendern(double zahl) { zahl = zahl + 200; System.out.println(zahl); } } /caUSUSPS\ eS`RS\ ! !"# c\R  !"# 2Oa hSWUb ROaa RS` 7\VOZb RS` DO`WOPZS\ iPW[ aWQV W\ RS` 6Oc^b[SbV]RS \PX] \WQVb USÉ\RS`b VOb eSWZ \É[ZWQV RWS ;SbV]RS PT] STa] [Wb SW\S` 9]^WS RS` 2ObS\ O`PSWbSb

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% ?PaP\TcTa ¶QTaVTQT] d]S T\_UP]VT]

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(( merker2.doc

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Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

:[PbbT] QTbRWaTXQT] d]S QT]dciT]

?a^VaP\\ ?Pac]TaCTbc ) 4X]T 8]bcP]i TaiTdVT] d]S =PRWaXRWcT] bRWXRZT] class PartnerTest01 { public static void main(String[] args) { Partner01 g1 = new Partner01(); g1.neu(4700, "Meyer"); g1.ausgeben(); } } ÎQd]V id\ ?a^VaP\\ ?Pac]TaCTbc ÍPS`^`ºTS\ AWS eSZQVS 4SVZS`[SZRc\U PSW RS` C[eO\RZc\U OcaUSUSPS\ eW`R eS\\ RWS >O`O[SbS` "% ;SgS` W\ c[USYSV`bS` @SWVS\T]ZUS ºPS`USPS\ eS`RS\

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

" <XcVT[XTUTacT :[PbbT QT]dciT]

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public class Partner02 { public static void main(String[] args) { Partner02 g1 = new Partner02(); g1.neu(4700, "Meyer"); g1.ausgeben(); } private int nr; private String name; void neu(int nr1, String name1) { nr = nr1; name = name1; } void ausgeben() { System.out.println(nr + " " + name); } void setName(String name1) { name = name1; } } ÎQd]V id\ ?a^VaP\\ ?Pac]Ta! 3`UÉ\hS\ AWS ROa >`]U`O[[ ?Pac]Ta! a] ROaa SW\S heSWbS 7\abO\h S`hScUb eW`R 2S` 7\abO\h\O[S a]ZZ aSW\( U  2WS ES`bS aW\R " Tº` RWS 9c\RS\\c[[S` c\R AQVcZh Tº` RS\


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#%

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Stand: 22.12.2005 13:39:00 ))

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GregorianCalendar

Field Summary static int AD

Value of the ERA field indicating the common era (Anno Domini), also known as CE.

static int BC

Value of the ERA field indicating the period before the common era (before Christ), also known as BCE.

is a concrete subclass of Calendar and provides the standard calendar system used by most of the world.

GregorianCalendar

Constructor Summary Constructs a default GregorianCalendar using the current time in the default time zone with the default locale.

GregorianCalendar()

GregorianCalendar(int year, int month, int dayOfMonth) Constructs a GregorianCalendar with the given date set in the

default

time zone with the default locale

Method Summary void add(int field, int amount)

Adds the specified (signed) amount of time to the given calendar field, based on the calendar's rules.

Object clone()

Creates and returns a copy of this object.

proteccomputeFields() Converts the time value ted void from the Epoch) to calendar field values.

(millisecond offset

#&

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

" <XcVT[XTUTacT :[PbbT QT]dciT]


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import java.util.*; public class Gregorian01 { public static void main(String[] args) { GregorianCalendar heute = new GregorianCalendar(); System.out.println(heute.get(Calendar.DAY_OF_MONTH)); System.out.println(heute.get(Calendar.MONTH)); System.out.println(heute.get(Calendar.YEAR)); } }

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Stand: 22.12.2005 13:39:00 ))

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{

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

" <XcVT[XTUTacT :[PbbT QT]dciT]

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Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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?a^VaP\\ ?adTUT] ) :[PbbT SXT TX]T] 8]cTVTafTac b_TXRWTac d]S ¶QTa_a¶Uc class Pruefen01 { private int zahl = 5; boolean pruefInt() { if ((zahl % 2) == 0) return true; else return false; } } ÎQd]V id\ ?a^VaP\\ ?adTUT] 3`abSZZS\ AWS SW\ OcaTºV`PO`Sa >`]U`O[[ ROa SW\S 7\abO\h d]\ ?adTUT] S`abSZZb c\R O\ RWSaS 7\abO\h SW\S
public class PruefenClient01 { public static void main(String[] args) { Pruefen01 p = new Pruefen01(); if (p.pruefInt()) System.out.println("Die Zahl ist gerade"); else System.out.println("Die Zahl ist ungerade"); } } ÎQd]V id\ ?a^VaP\\ ?adTUT] Ò\RS`\ AWS RWS 9ZOaaS ?adTUT] YPeP a] OP ROaa ROa 4SZR iPW[ \WQVb Sf^ZWhWb W\WbWOZW aWS`b eW`R EOa ZWSTS`b XSbhb RWS ;SbV]RS _adTU8]c- 2WS 3`YS\\b\Wa eW`R aSW\ ROaa ;S[PS`dO`WOPZS\ Ocb][ObWaQV W\WbWOZWaWS`b eS`RS\ EWS ZOcbSb RS` /\TO\UaeS`b SW\S` X]cDO`WOPZS\ eS\\ \WQVba O\RS`Sa d][ >`]U`O[[WS`S` d]`USUSPS\ eW`R- 4OhWb( 8SRSa ;OZ eS\\ [Wb ]Tf SW\S 7\abO\h W[ A^SWQVS` O\USZSUb eW`R S`hScUb ROa @c\bW[SAgabS[ SW\S\ Y][^ZSbb \ScS\ AObh RS` 7\abO\hdO`WOPZS\ RWSaS` 9ZOaaS 2OPSW eS`RS\ RWSaS DO`WOPZS\ [Wb 7\WbWOZeS`bS\ d]`PSZSUb( \c[S`WaQVS ES`bS eS`RS\ [Wb
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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# 4XVT]T :[PbbT] TabcT[[T]

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{

private int tag; private int monat; private int jahr; void erstellen() { Calendar cal = new GregorianCalendar(); tag = cal.get(Calendar.DATE); monat = (cal.get(Calendar.MONTH) + 1); jahr = cal.get(Calendar.YEAR); } void ausgeben() { char c = '.'; System.out.printf("%s%s%s%s%s", tag, c, monat, c, jahr); } } 4a[ÊdcTad]VT] ida :[PbbT 3Pcd\ 2WS 9ZOaaS YO\\ 2Obc[aO\UOPS\ a^SWQVS`\ c\R aWS S\bVÉZb ;SbV]RS\ c[ RO[Wb hc O`PSWbS\ Hc[ 3`abSZZS\ RSa OYbcSZZS\ BOUSaRObc[ U`SWTb aWS hc`ºQY OcT 2WS\abZSWa bc\US\ RS` AbO\RO`RYZOaaS\ 2P[T]SPa c\R 6aTV^aXP]2P[T]SPa W\RS[ aWS SW\S 7\ abO\h RS` 9ZOaaS 6aTV^aXP]2P[T]SPa S`hScUb c\R RO\\ O\ RWSaS 7\abO\h RWS O`O[SbS` PS\cbhb RWS VTc;SbV]RS bcPcXR4SZRS` RWS ZSRWUZWQV a^`SQVS\RS
(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# 4XVT]T :[PbbT] TabcT[[T]

this.stunde = stunde; this.minute = minute; this.sekunde = sekunde; } void addStunde(int st) { stunde = stunde + st; if (stunde > 24) stunde = stunde - 24; } public String toString() { String s1 = "Stunde: " + stunde + "\n"; String s2 = "Minute: " + minute + "\n"; String s3 = "Sekunde: " + sekunde + "\n"; return s1 + s2 + s3; } } 2WS 9ZOaaS S\bVÉZb SW\WUS A^`OQV[WbbSZ RWS eW` PWaVS` \c` O[ @O\RS S`ZÉcbS`b VOPS\ 3a VO\RSZb aWQV c[ T]ZUS\RS BVS[S\( •

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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public class Init01 { int zahl1; char c; float zahl2; public static void main(String[] args) { Init01 instanz1 = new Init01(); System.out.println(instanz1.zahl1); System.out.println(instanz1.zahl2); } } 0SW RS` /caTºV`c\U RWSaSa >`]U`O[[a eW`R RS` c\aWQVbPO`S AbO\RO`RY]\ab`cYb]` OcaUSTºV`b 7[ \ÉQVabS\ 0SWa^WSZ Wab SW\ 9]\ab`cYb]` OcaR`ºQYZWQV ^`]U`O[[WS`b ?a^VaP\\ 8]Xc!) 0aQTXcT] \Xc TX]T\ bT[Qbc R^SXTacT] :^]bcadZc^a

public class Init02 int zahl1; char c; float zahl2;

{

Init02(int z1, char c, int z2) { zahl1 = z1; this.c = c; zahl2 = z2; } public static void main(String[] args) { Init02 instanz1 = new Init02(15, 'a', 27); System.out.println(instanz1.zahl1); System.out.println(instanz1.c); System.out.println(instanz1.zahl2); } } %

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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import java.util.*; public class Datum { int tag; int monat; int jahr; Datum() { Calendar cal = new GregorianCalendar(); tag = cal.get(Calendar.DATE); monat = (cal.get(Calendar.MONTH) + 1); jahr = cal.get(Calendar.YEAR); } Datum(int t, int m, int j) { tag = t; monat = m; jahr = j; } void ausgeben(char zeichen) { char c = zeichen; System.out.printf("%s %s %s %s %s", tag, c, monat, c, jahr); } } 2WSaS 9ZOaaS VOb heSW 9]\ab`cYb]`S\ RS` S`abS 9]\ab`cYb]` Wab SW\ AbO\RO`RY]\ab`cY b]` RV S` S`eO`bSb YSW\S /`Uc[S\bS 4º` RS\ /cT`cT RSa heSWbS\ 9]\ab`cYb]`a aW\R R`SW X]c>O`O[SbS` \]beS\RWU 8OdO eÉVZb hc` /caTºV`c\UahSWb RS\ 9]\ab`cYb]` Oca RS` ^OaaS\R Wab C\R ^OaaS\R Wab RS` 9]\ab`cYb]` RO\\ eS\\ /\hOVZ c\R Bg^ RS` ºPS`USPS\S\ /`Uc[S\bS ºPS`SW\abW[[b [Wb RS` RSYZO`WS`bS\ /\hOVZ c\R RS[ Bg^ ;O\ aOUb 8OdO \W[[b RS\ 9]\ab`cYb]` RS` RWS S`eO`bSbS AWU\Obc` VOb ?a^VaP\\ 3Pcd\CTbc ) 8]bcP]iXXTaT] d]S 0dUadUT] STb aXRWcXVT] :^] bcadZc^ab

public class DatumTest01 { public static void main(String[] args) Datum d1 = new Datum(24, 12, 2005); d1.ausgeben('|'); } }

{

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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2Oa >`]U`O[[ ATRWcTRZYPeP S\bVÉZb SW\S 9ZOaaS\PSaQV`SWPc\U Tº` SW\ @SQVbSQY 2WS ROTº` \]beS\RWUS\ 2ObS\ aW\R heSW >]aWbW]\aO\UOPS\( ZW\Ya ]PS\ c\R `SQVba c\bS\ XSeSWZa O\USUSPS\ OZa f c\R gES`b /czS`RS[ S\bVÉZb RWS 9ZOaaS heSW 9]\ab`cYb] `S\ c\R aWS ºPS`aQV`SWPb RWS ;SbV]RS c^BcaX]V RS` 9ZOaaS >QYTRc ?a^VaP\\ ATRWcTRZ) >eTaaXST e^] eTa[^PS STb :^]bcadZc^ab import java.awt.*; import java.util.*; class Rechteck { private int x1, y1; private int x2, y2; Rechteck(int x1, int y1, int x2, int y2) { this.x1 = x1; this.y1 = y1; this.x2 = x2; this.y2 = y2; } Rechteck(Point linksoben, Point rechtsunten) { x1 = linksoben.x; y1 = linksoben.y; x2 = rechtsunten.x; y2 = rechtsunten.y; } public String toString() { return String.format("%d / %d / %d / %d", x1 , y1, x2, y2); } public static void main(String[] args) { Rechteck r1 = new Rechteck(5, 10, 20, 10); System.out.println(r1); } } <]QV SW\[OZ RS` 6W\eSWa OcT RWS ;SbV]RS c^BcaX]V) AWS Wab heO` Tº` XSRS 9ZOaaS dS` TºUPO` eSWZ aWS BSWZ RS` 9ZOaaS >QYTRc Wab eW`R OPS` W\ RWSaS[ >`]U`O[[ ºPS` aQV`WSPS\ c[ SW\S W\RWdWRcSZZS :rac\U hc PSY][[S\ %!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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ÎQd]V id\ ?a^VaP\\ ATRWcTRZ 3`abSZZS\ AWS SW\ heSWbSa =PXSYb a! ROPSW a]ZZ XSR]QV RS` heSWbS 9]\ab`cYb]` OcTUS `cTS\ eS`RS\ ;»bd]VbWX]fTXb( 2Ohc aW\R heSW 7\abO\hS\ RS` 9ZOaaS ?^X]c hc S`abSZZS\ 2WSaS [ºaaS\ RO\\ PSW RS` 7\abO\hWWS`c\U d]\ a! OZa >O`O[SbS` [WbUSUSPS\ eS`RS\ 7[ >OYSb YPePPfc UWPb Sa RWdS`aS 9ZOaaS\ c[ SW\S U`OTWaQVS 0S\cbhS`]PS`TZÉQVS hc W[^ZS[S\bWS`S\ 2Ohc USVr`S\ OcQV RWS 9ZOaaS\ ?^X]c 3X\T]bX^] c\R ATRcP]V[T 2WS 9ZOaaS ATRcP]V[T PWSbSb % dS`aQVWSRS\S 9]\ab`cYb]`S\ O\ ?a^VaP\\ ATRWcTRZ!) :[PbbT] QT]dciT] bXRW VTVT]bTXcXV import java.awt.*; public class Rechteck02 { public static void main(String[] args) { Point p1 = new Point(10,100); Dimension d1 = new Dimension(20,30); Rectangle r1 = new Rectangle(p1, d1); System.out.println(r1); } }




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class Partner { private int nr; private String name; Partner(int nr1, String name1) { nr = nr1; name = name1; } void ausgeben() { System.out.println(nr + " " + name); } void setName(String name1) { %#

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class Kunde extends Partner { private double umsatz; void ausgeben() { super.ausgeben(); System.out.println("Umsatz: " + umsatz); } void setUmsatz(double umsatz) { this.umsatz = umsatz; } } ÎQd]V id\ ?a^VaP\\ :d]ST 3`UÉ\hS\ AWS RWS PSabSVS\RS ?cSZZbSfbRObSW c[ RWS 9ZOaaS :d]ST DS`acQVS\ AWS SW \S C[eO\RZc\U 2OPSW eW`R T]ZUS\RS 4SVZS`[SZRc\U OcaUSUSPS\(  QO\\]b TW\R ag[P]Z  Q]\ab`cQb]` >O`b\S` %$

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2WSaS 4SVZS`[SZRc\U Wab dS`eW``S\R c\R YSW\SaeSUa aSZPabS`YZÉ`S\R 2S` 6W\bS` U`c\R Wab( 7\ RS` \ScS\ 9ZOaaS :d]ST Wab YSW\ 9]\ab`cYb]` RSTW\WS`b OZa] eW`R SW\ 2STOcZb9]\ab`cYb]` SW\USTºUb 8SRS` 9]\ab`cYb]` `cTb c\aWQVbPO` OZa S`abS\ 0STSVZ RS\ 9]\ab`cYb]` aSW\S` Ac^S`YZOaaS OcT W\ RWSaS[ 4OZZ OZa] RS\ 9]\ab`cYb]` ?Pac ]Ta ESWZ XSR]QV W\ RS` >O`b\S`9ZOaaS SW\ VO\RUSaQV`WSPS\S` 9]\ab`cYb]` SW\US TºUb ec`RS eW`R RS` 2STOcZb9]\ab`cYb]` \WQVb Ocb][ObWaQV S`abSZZb a]\RS`\ [caa OcQV VO\RUSaQV`WSPS\ eS`RS\ /Za] [caa ZSRWUZWQV SW\S HSWZS VW\hcUSTºUb eS`RS\ 3XT ]TdT :[PbbT ?Pac]Ta P bXTWc YTcic b^ Pdb) class Partner01a { private int nr; private String name; Partner01a() {} Partner01a(int nr1, String name1) { nr = nr1; name = name1; } void ausgeben() { System.out.println(nr + " " + name); } void setName(String name1) { name = name1; } }

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class Lieferant extends Partner01a { private float rabatt; void ausgeben() { super.ausgeben(); System.out.println("Rabatt: " + rabatt); } void setRabatt(float rabatt) { this.rabatt = rabatt; } k

%%



(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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:[PbbT] QTbRWaTXQT] d]S QT]dciT]

} class Lieferant extends Partner01a { private float rabatt; Lieferant(int nr1, String name1) { // neu super(nr1, name1); } void ausgeben() { super.ausgeben(); System.out.println("Rabatt: " + rabatt); } void setRabatt(float rabatt) { this.rabatt = rabatt; } } class Kunde extends Partner01a { private double umsatz; Kunde(int nr1, String name1) { // neu super(nr1, name1); } void ausgeben() { super.ausgeben(); System.out.println("Umsatz: " + umsatz); } void setUmsatz(double umsatz) { this.umsatz = umsatz; } } ?a^VaP\\ ?Pac]TaCTbc!) 1T]dciT] STa :[PbbT]

public class PartnerTest02 { public static void main (String[] args) { Partner01a p = new Partner01a(15, "Merker"); p.ausgeben(); Kunde k = new Kunde(12, "Schulz"); k.setUmsatz(50000); k.ausgeben(); Lieferant l = new Lieferant(21, "Meyer"); l.setRabatt(15.0f); l.ausgeben(); } } &

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ClassA () { System.out.println("Hier ist Konstruktor A"); } } class ClassB extends ClassA { ClassB() { System.out.println("Hier ist Konstruktor B"); } }



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(( merker2.doc

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public class Enum02 { enum Wochentage { sonntag,montag,dienstag,mittwoch, donnerstag,freitag,samstag; } public static void main(String[] args) { for (Wochentage w : Wochentage.values()) System.out.println(w); } } 3\c[0SaQV`SWPc\US\ Yr\\S\ eWS \]`[OZS 9ZOaaS\ USaSVS\ eS`RS\ AWS S`PS\ ;S bV]RS\ d]\ WV`S` 0OaWaYZOaaS 4]d\ c\R aWS Yr\\S\ SWUS\S ;SbV]RS\ S\bVOZbS\ 2Oa T]ZUS\RS 0SWa^WSZ PSabSVb Oca SW\S` C[eO\RZc\UaSW\VSWb RWS a]e]VZ RWS T]d\ 0SaQV`SWPc\U OZa OcQV WV`S 0S\cbhc\U S\bVÉZb 3a RS[]\ab`WS`b T]ZUS\RS DS`O`PSW bc\Ua[rUZWQVYSWbS\( •

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Snum Tageszeit { morgens, mittag, abends; void anzeigen() { System.out.println(this); } } public class Enum03 { public static void main(String[] args) { Tageszeit t1; // Variable definieren

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Stand: 22.12.2005 13:39:00 ))

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t1 = Tageszeit.mittag; // Wertezuweisung if (t1 == Tageszeit.mittag) // Variable abfragen System.out.println("Guten Tag"); switch(t1) { case morgens: System.out.println("Guten Morgen"); break; case mittag: System.out.println("Guten Tag"); break; case abends: System.out.println("Guten Abend"); break; } for (Tageszeit t2 : Tageszeit.values()) System.out.println(t2); t1.anzeigen(); // Aufruf einer Methode } }

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public class EnumTest02 { // Tageszeit static final int MORGENS = 0; static final int MITTAG = 1; static final int ABENDS = 2; // Farben static final int ROT static final int BLAU

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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\S\\b [O\ @SWVc\U S\UZ O``Og /``Oga aW\R W\ 8OdO SQVbS =PXSYbS ]Pe]VZ Sa YSW\S 9ZOaaS UWPb d]\ RS` aWS S`hScUb eS`RS\ 5ZSWQVe]VZ eS`RS\ aWS [Wb RS[ AQVZºaaSZe]`b ]Tf S`abSZZb ÒczS`ZWQVSa ;S`Y[OZ ROTº` ROaa Sa aWQV c[ RS\ 2ObS\bg^ 0aaPh VO\RSZb Wab RWS DS`eS\Rc\U d]\ SQYWUS\ 9ZO[[S`\ I K PSW RS` 2SYZO`ObW]\ RS` @STS`S\hdO`WOPZS( int[] zahlenreihe* ;Wb RWSaS` 2SYZO`ObW]\ eW`R RWS @STS`S\h hc SW\S[ /``Og]PXSYb S`abSZZb  ]RS` PSaaS` USaOUb SW\S DO`WOPZS RWS RWS 4ÉVWUYSWb VOb OcT SW\ RS`O`bWUSa =PXSYb hc hSWUS\ RS\\ Sa UWPb XO \]QV YSW\ /``Og]PXSYb 2S` 7RS\bWTWS` VWS`( iPW[T]aTXWT eW`R OcQV /``OgdO`WOPZS US\O\\b 2S` 2ObS\bg^ X]c UWZb Tº` XSRSa SW\hSZ\S ;WbUZWSR RS` 5`c^^S !!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"

ATXWd]VT] QT]dciT] PaaPhb

9][^]\S\bS 3ZS[S\b 2WS SQYWUS 9ZO[[S` abSVb VW\bS` RS[ 2ObS\bg^ aWS YO\\ OcQV VW\bS` RS[ 7RS\bWTWS` abSVS\ R]QV RWSaS AQV`SWPeSWaS eW`R \WQVb S[^T]VZS\ 2Oa SWUS\bZWQVS /``Og]PXSYb YO\\  eWS PSW =PXSYbS\ ºPZWQV  [Wb ]Tf S`hScUb eS` RS\(

zahlenreihe = new int[5]; ;Wb RWSaS` /\eSWac\U eS`RS\ Rg\O[WaQV hc` :OcThSWb W[ /`PSWbaa^SWQVS` # X]c 3ZS[S\bS O\USZSUb OZZS c\bS` RS[ ZObh\c[[S` 7\RSf h0 zahlenreihe[2] = 15; ;Wb RWSaS` ES`bShceSWac\U eW`R RWS R`WbbS 9][^]\S\bS Oca RS` HOVZS\`SWVS [Wb RS[ ES`b # USTºZZb 0WbbS PSOQVbS\ AWS( RS` 7\RSf [caa UO\hhOVZWU aSW\ c\R RWS OR`SaaWS`b RWS ! HOVZ eSWZ RWS ZÉbhS PSW  PSUW\\b ?a^VaP\\ 0aaPh ) 4X] 0aaPh TabcT[[T] d]S \Xc FTacT] U¶[[T] public class Array01 { public static void main(String[] args) int[] umsatz; umsatz = new int[3]; umsatz[0] = 100; umsatz[1] = 200; umsatz[2] = 300; } }

{

2c`QV RWS 2SYZO`ObW]\ int[] umsatz; eW`R SW\S @STS`S\hdO`WOPZS O\USZSUb RWS RWS 4ÉVWUYSWb VOb OcT SW\S @SWVc\U d]\ 7\bSUS`ES`bS\ hc dS`eSWaS\ 2c`QV ROa O\ aQVZWSzS\RS AbObS[S\b umsatz = new umsatz[3]; eS`RS\ ! /`PSWbaa^SWQVS` ^ZÉbhS O\USZSUb XSRS` Wab " 0gbSa ZO\U 8SRS` VOb RWS 4ÉVWUYSWb 7\bSUS`eS`bS OcThc \SV[S\ /R`SaaWS`b eS`RS\ RWS SW\hSZ\S\ >ZÉbhS [Wb SW\S[ 7\RSf d]\  PWa  @STS`S\hDO`WOPZS

d\bPci







!

/PP!( /``Og W[ /`PSWbaa^SWQVS` 4OhWb( 0SW RS` 2STW\WbW]\ eW`R SXT 0]iPW[ RS` 3ZS[S\bS O\USUSPS\ c\R \WQVb SbeO RWS VrQVabS >ZObhZÉbhS RS` @SWVc\U [Wb ES`bS\ USTºZZb eS`RS\

!"

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"! 8]XcXP[XbXTaT] e^] 0aaPhb

2WS /\UOPS RS` 9][^]\S\bS\O\hOVZ YO\\ TSVZS\ eS\\ ROa /``Og OZa T]`[OZS` >O `O[SbS` SW\S` ;SbV]RS RSTW\WS`b eW`R SW\ bg^WaQVSa 0SWa^WSZ ROTº` S\bVÉZb RWS \PX] ;SbV]RS R]`b Wab SW\ Ab`W\U/``Og OZa 3[^TO\Ua^O`O[SbS` RSTW\WS`b /PS` Sa UWPb W\ 8OdO YSW\S ;rUZWQVYSWb RWS /\hOVZ RS` 3ZS[S\bS hc É\RS`\ eS\\ ROa /``Og SW\[OZ W[ /`PSWbaa^SWQVS` O\USZSUb Wab ;O\ aOUb RWS 6a»vT TX]Tb 0aaPhb Xbc bcPcXbRW ES`RS\ Rg\O[WaQVS /``Oga PS\rbWUb a] [caa RWS AbO\RO`RYZOaaS ETRc^a PS\cbhb eS`RS\ ]RS` SW\S O\RS`S 9ZOaaS RSa 4`O[Se]`Ya 2^[[TRcX^] ÎQd]V 3`abSZZS\ AWS SW\ \ScSa >`]U`O[[ [Wb SW\S` @STS`S\hdO`WOPZS\ 2WSaS DO`WOPZS a]ZZ RWS 4ÉVWUYSWb VOPS\ OcT SW\ /``Og [Wb U[^PcDO`WOPZS\ hc `STS`S\hWS`S\ 2WS @STS `S\hdO`WOPZS a]ZZ RS\ 7RS\bWTWS` iPW[T] VOPS\ 2O\OQV a]ZZ ROa /``Og W[ /`PSWbaa^SW QVS` O\USZSUb eS`RS\ 0S\rbWUb eS`RS\ " 3ZS[S\bS ;»bd]Vbe^abRW[PV public class Array02 { public static void main(String[] args) float[] zahlen; zahlen = new float[4]; } }



{

/TOZOGROYOKXKT\UT'XXG_Y

0SW[ /\ZSUS\ RSa A^SWQVS`^ZObhSa Tº` ROa SWUS\bZWQVS /``Og]PXSYb Wab Sa c\PSRW\Ub S`T]`RS`ZWQV ROaa /\UOPS\ hc RS` 5`rzS RSa /``Oga US[OQVb eS`RS\ 2WS 5`rzS S` UWPb aWQV Oca RS` /\hOVZ RS` 9][^]\S\bS\ RS` @SWVc\U c\R RWS YO\\ OcT heSW /` bS\ TSabUSZSUb eS`RS\ Hc\ÉQVab Wab Sa [rUZWQV ROaa W[ 2SYZO`ObW]\aabObS[S\b SW\S 5O\hhOVZ ]RS` SW\ /caR`cQY RS` SW\S 5O\hhOVZ S`UWPb abSVb(



int[] zahlenreihe = new zahlenreihe[a + 5];

0SW RWSaS` AQV`SWPeSWaS eS`RS\ RWS SW\hSZ\S\ 9][^]\S\bS\ [Wb 2STOcZbeS`bS\ W\WbW OZWaWS`b OPVÉ\UWU d][ 2ObS\bg^ 3W\S O\RS`S ;rUZWQVYSWb PSabSVb RO`W\ RWS 3ZS[S\bS PSW WV`S` 2SYZO`ObW]\ [Wb W\RWdW RcSZZS\ /\TO\UaeS`bS\ hc TºZZS\ hc W\WbWOZWaWS`S\ 7\ RWSaS[ 4OZZ YO\\ RWS /\UOPS RS` /\hOVZ S\bTOZZS\ aWS S`UWPb aWQV Oca RS` /\hOVZ RS` ES`bS RWS OZa Y][[OUS b`S\\bS :WabS W\ USaQVeSWTbS\ 9ZO[[S`\ abSVb(



int[] zahlenreihe = {5, 3, 4, 17, 21};

0SW RWSaS` 9c`haQV`SWPeSWaS S\bTÉZZb OcQV ROa AQVZºaaSZe]`b ]Tf RS` 1][^WZS` S` [WbbSZb RWS /\hOVZ RS` 3ZS[S\bS Oca RS` :WabS aSZPab !#

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"

ATXWd]VT] QT]dciT] PaaPhb

?a^VaP\\ 0aaPh") 3TZ[PaPcX^] d]S X]SXeXSdT[[T 8]XcXP[XbXTad]V TX]Tb 0aaPhb public class Array03 { public static void main(String[] args) int[] umsatz = {100,200,300,0,0}; umsatz[4] = 1100; System.out.println(umsatz[1]); } }

{

7\ RS` HSWZS ! eW`R RWS @STS`S\hdO`WOPZS d\bPci RSYZO`WS`b 5ZSWQVhSWbWU eW`R ROa /` `Og]PXSYb S`hScUb c\R RS\ Tº\T 9][^]\S\bS\ RWS ES`bS Oca RS` :WabS RS` Tº\T X]c :WbS`OZS hcUSeWSaS\ 2ORc`QV eS`RS\ RWS 9][^]\S\bS\ RSa /``Oga W\WbWOZWaWS`b 2WS RO`OcT T]ZUS\RS SW\hSZ\S ES`bShceSWac\U OR`SaaWS`b ROa ZSbhbS 3ZS[S\b W\ RS` @SW Vc\U C\R [Wb RS` ZSbhbS\ /\eSWac\U eW`R RS` ES`b RSa heSWbS\ 3ZS[S\ba OcaUSUS PS\ ÎQd]V 3`abSZZS\ AWS SW\ \ScSa >`]U`O[[ 0aaPh# 2SYZO`WS`S\ AWS RO`W\ SW\ /``Og ROa Oca # RWPa3ZS[S\bS\ PSabSVb 2WS 3ZS[S\bS a]ZZS\ W\WbWOZWaWS`b eS`RS\ [Wb RS\ 9ZSW\ PcQVabOPS\ d]\ O PWa S 0S\cbhS\ AWS Tº` RWS 7\WbWOZWaWS`c\U RWS 9c`haQV`SWPeSWaS RO[Wb RWS Sf^ZWhWbS /\UOPS RS` /``OgU`rzS 2W[S\aW]\ S\bTOZZS\ YO\\ ;»bd]Vbe^abRW[PV

public class Array04 { public static void main(String[] args) { char[] buchstaben = {'a','b','c','d','e'}; System.out.println(buchstaben[3]); } } ES\\ RS` >`]U`O[[WS`S` YSW\S /\TO\UaeS`bS d]`UWPb eS`RS\ RWS 9][^]\S\bS\ SW \Sa /``Oga [Wb AbO\RO`ReS`bS\ W\WbWOZWaWS`b 0SWa^WSZaeSWaS PSY][[S\ \c[S`WaQVS Bg^S\ RS\ ES`b  2Oa T]ZUS\RS >`]U`O[[ RSTW\WS`b SW\ /``Og Tº` RWS /cT\OV[S d]\ ATUTaT]iT] PdU >QYTZcT aWSVS OcQV /PaQV\Wbb !" /PS` eSWZ \]QV YSW\S =PXSYbS S`hScUb e]`RS\ aW\R S\bVOZbS\ RWS 9][^]\S\bS\ RS\ /\TO\UaeS`b ]d[[ ?a^VaP\\ 0aaPh$) 3XT :^\_^]T]cT] fTaST] \Xc 3TUPd[cfTacT] e^aQT[TVc public class Array05 { public static void main (String args[]) { Object[] obj = new Object[3]; System.out.println(obj[0]); } } !$

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"" IdVaXUU PdU SXT 0aaPh:^\_^]T]cT]

ÎQd]V id\ ?a^VaP\\ 0aaPh$ ÍPS`^`ºTS\ AWS Rc`QV >`]U`O[[É\RS`c\U eWS RS` 2STOcZbeS`b ZOcbSb eS\\ ROa /` `Og Oca Q^^[TP]Bg^S\ PSabSVb UP[bT ]RS` cadT. 2Oa T]ZUS\RS >`]U`O[[ YO\\ \WQVb TSVZS`T`SW c[USeO\RSZb eS`RS\ ?a^VaP\\ 0aaPh%) D\fP]S[d]VbUTW[Ta   ]^c WPeT QTT] X]XcXP[XiTS public class Array06 { public static void main (String args[]) { float[] zahlen; zahlen[0] = 15.4f; } } ÎQd]V id\ ?a^VaP\\ 0aaPh% 9ZÉ`S\ AWS RWS C`aOQVS RSa Ag\bOfTSVZS`a c\R Y]``WUWS`S\ AWS RS\ 4SVZS` :rac\UaVW\eSWa( /``Og]PXSYbS [ºaaS\ W[ /`PSWbaa^SWQVS` [Wb ]Tf S`hScUb eS`RS\ 4OhWb Oca RS\ ZSbhbS\ PSWRS\ ÍPc\US\( 0SW[ 7\WbWOZWaWS`S\ d]\ /``Og]PXSYbS\ [caa aOcPS` c\bS`aQVWSRS\ eS`RS\ heWaQVS\ RS` 7\WbWOZWaWS`c\U RS` @STS`S\hdO`WOPZS\ RWSa USaQVWSVb Rc`QV /cT`cT d]\ ]Tf c\R RS` 0SZSUc\U RS` SW\hSZ\S\ 9][^]\S\ bS\ [Wb /\TO\UaeS`bS\ RWSa USaQVWSVb ROPSW Ocb][ObWaQV



@[MXOLLG[LJOK'XXG_1USVUTKTZKT

2WS SW\hSZ\S\ DO`WOPZS\ Oca RS\S\ aWQV ROa /``Og hcaO[[S\aSbhb eS`RS\ 9][^] \S\bS\ [O\QV[OZ OcQV 3ZS[S\bS US\O\\b AWS eS`RS\ c\bS`aQVWSRS\ ºPS` WV`S >ZObh`]U`O[[a eW`R aWQVS`USabSZZb ROaa \c` UºZbWUS 7\RWQSa dS`O`PSWbSb eS`RS\ O\RS`\TOZZa UWPb Sa 4SVZS`[SZRc\US\ 3fQS^bW]\a Rc`QV RWS 8OdO DW`bcSZZS ;OaQVW\S 8D; 2WS 7\RWQSa PSUW\\S\ PSW  hc hÉVZS\




2c`QV RS\ 3W\aObh SW\Sa /``Oga eW`R RWS 2SYZO`ObW]\ DS`eOZbc\U c\R DS`O`PSWbc\U RS` SW\hSZ\S\ 9][^]\S\bS\ S`VSPZWQV dS`SW\TOQVb AWS P`OcQVS\ \c` SW\[OZ RSYZO `WS`b hc eS`RS\ AWS Yr\\S\ SW\hSZ\ ]RS` OZa 5O\hSa dS`O`PSWbSb eS`RS\ ;O\ YO\\ RW`SYb OcT SW\hSZ\S 9][^]\S\bS\ hcU`SWTS\ ]RS` [O\ YO\\ AQVZSWTS\ T]`[cZWS`S\ c[ aS_cS\bWSZZ Rc`QV OZZS 3ZS[S\bS hc WbS`WS`S\ 0Sa]\RS`a SZSUO\b Wab ROa /`PSWbS\ [Wb RS` U^aAQVZSWTS !%

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"

ATXWd]VT] QT]dciT] PaaPhb

?a^VaP\\ 0aaPh&) 8cTaXTaT] SdaRW TX] 0aaPh

d]S IdVaXUU PdU YTSTb 4[T\T]c public class Array07 { public static void main(String[] args) float[] zahlen; zahlen = new float[4]; for (int i=0; i<4; i++) zahlen[i] = i + 125.0f; } }

{

3W\S eSWbS`S DS`O`PSWbc\UadO`WO\bS PSabSVb RO`W\ RWS 5`c^^S RS` 3ZS[S\bS OZa 5O\ hSa hc dS`O`PSWbS\ 2Ohc PWSbSb RWS 9ZOaaS YPePdcX[0aaPhb aWSVS /PaQV\Wbb !#( 1ZOaa 0aaPhb SW\S 4ºZZS d]\ ;SbV]RS\ h0 RWS ;SbV]RS UX[[ ?a^VaP\\ 0aaPh') 3Pb 0aaPh P[b 6P]iTb eTaPaQTXcT]

public class Array08 { public static void main(String[] args) { float[] zahlen; zahlen = new float[4]; java.util.Arrays.fill(zahlen, 12.45f); for (float zahl : zahlen) System.out.println(zahl); } } ÎQd]V id\ ?a^VaP\\ 0aaPh' 9ZÉ`S\ AWS O\VO\R RS` />72]Yc[S\bObW]\ [Wb eSZQVS` ;SbV]RS RS` 9ZOaaS 0aaPhb SW\ U[^Pc/``Og W\ SW\S Ab`W\U`S^`ÉaS\bObW]\ c[USeO\RSZb eS`RS\ YO\\ 3`UÉ\hS\ AWS ROa >`]U`O[[ c[ SW\S\ S\ba^`SQVS\RS\ /caUOPSPSTSVZ ;»bd]VbWX]fTXb)





System.out.println(java.util.Arrays.toString(zahlen));



6X„L[TMJKY/TJK^J[XIN8[T:OSK;SMKH[TM

8SRS` /``OgHcU`WTT eW`R d]\ RS` :OcThSWbc[USPc\U ºPS`^`ºTb 2S` DS`acQV SW\S\ 7\RSf hc dS`eS\RS\ RS` YZSW\S` OZa
!&

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"" IdVaXUU PdU SXT 0aaPh:^\_^]T]cT]

?a^VaP\\ 0aaPh() 5P[bRWT 0SaTbbXTad]V TX]Ta 0aaPh:^\_^]T]cT public class Array09 { public static void main(String[] args) { char[] buchstaben = {'a','b','c','d','e'}; for(int i=0; i<6; i++) { System.out.println(buchstaben[i]); } } } ÎQd]V id\ ?a^VaP\\ 0aaPh( 0SW RS` /caTºV`c\U UWPb Sa RWS 4SVZS`[SZRc\U /``Og7\RSf=cb=T0]c\Ra3fQS^bW]\( # AW\\US[Éz PSRScbSb ROa ROaa RS` 7\RSf # SW\S\ A^SWQVS` OczS`VOZP RWSaS` /` `OgU`S\hS\ OR`SaaWS`b 9]``WUWS`S\ AWS ROa >`]U`O[[ a] ROaa Sa TSVZS`T`SW OcaUSTºV`b eS`RS\ YO\\



3KSHKX
Hc XSRS[ /``Og UWPb Sa SW\S hcaÉbhZWQVS SW\USPOcbS DO`WOPZS RWS OZa ES`b RWS /\hOVZ RS` /``Og3ZS[S\bS S\bVÉZb RWS DO`WOPZS [T]VcW AWS YO\\ h0 W[ 9]^T SW\S` U^a AQVZSWTS PS\cbhb eS`RS\ c[ RWS 2c`QVZOcTPSRW\Uc\U hc T]`[cZWS`S\ ?a^VaP\\ 0aaPh ) 0aQTXcT] \Xc STa EPaXPQ[T] [T]VcW

public class Array10 { public static void main(String[] args) { char[] buchstaben = {'a','b','c'}; for(int i=0; i`]U`O[[WS`S` \WQVb OPhÉVZS\ [caa eWSdWSZ 3ZS[S\bS ROa /``Og S\bVÉZb Hc[ O\RS`S\ Wab aWS OcaaOUSTÉVW US`( [O\ S`YS\\b a]T]`b ROaa OZZS 3ZS[S\bS dS`O`PSWbSb eS`RS\ ÎQd]VT] id\ ?a^VaP\\ 0aaPh  ÎQd]V ) 3`UÉ\hS\ AWS ROa >`]U`O[[ a] ROaa RS` ES`b RS` DO`WOPZS\ [T]VcW OcT RS` 9]\a]ZS OcaUSUSPS\ eW`R ÎQd]V !( 0WbbS É\RS`\ AWS ROa >`]U`O[[ a] ROaa [Wb SW\S` 4]`3OQVAQVZSWTS ROa /``Og Rc`QVacQVb eW`R \OQV RS[ 0cQVabOPS\ P ES\\ RWSaS` ES`b USTc\RS\ eW`R a]ZZ S` OcaUSUSPS\ c\R RWS AcQVS OPUSP`]QVS\ eS`RS\ !'

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"

ATXWd]VT] QT]dciT] PaaPhb

;»bd]Vbe^abRW[PV

public class Array11 { public static void main(String[] args) { char[] buchstaben = {'a','b','c'}; for (char buchstabe: buchstaben) { if (buchstabe == 'b') { System.out.println(buchstabe); break; } } } } 2WS DO`WOPZS [T]VcW S\bVÉZb \WQVb RWS /\hOVZ RS` VTU¶[[cT] 9][^]\S\bS\ a]\RS`\ RWS 5SaO[bO\hOVZ OZZS` 3ZS[S\bS c\OPVÉ\UWU ROd]\ ]P aWS [Wb W\RWdWRcSZZS\ ES` bS\ USTºZZb e]`RS\ aW\R ]RS` ]P aWS RWS 2STOcZb7\WbeS`bS S\bVOZbS\ ES\\ OZa] \c` RWS USTºZZbS\ 3ZS[S\bS dS`O`PSWbSb eS`RS\ a]ZZS\ a] [caa RWS S\b a^`SQVS\RS /PT`OUS d][ >`]U`O[[WS`S` Q]RWS`b eS`RS\ ÎQd]V

3`abSZZS\ AWS SW\ \ScSa >`]U`O[[ 0aaPh ! 2O`W\ a]ZZ SW\ /``Og RSTW\WS`b eS`RS\ ROa RWS HOVZS\    W\ aSW\S\  9][^]\S\bS\ a^SWQVS`b 2WS ES`bS RS` 9][^]\S\bS\ a]ZZS\ W\ SW\S` U^aAQVZSWTS Rc`QV ES`bShceSWac\U dS`USPS\ eS`RS\ 2O\OQV a]ZZ W\ SW\S` heSWbS\ U^aAQVZSWTS ROa /``Og WbS`WS`b c\R RWS 7\VOZbS OcTORRWS`b eS`RS\ 2Oa 3`USP\Wa eW`R OcT RS` 9]\a]ZS OcaUSUSPS\ ;»bd]Vbe^abRW[PV)

public class Array12 { public static void main(String[] args) { int[] zahlen = new int[10]; for (int i=0; i<10; i++) { zahlen[i] = i+1; } int summe = 0; for (int wert: zahlen) { summe = summe + wert; } System.out.println("Die Summe ist: " + summe); } }

! 

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

"# >QYTZcT X] 0aaPhb bP\\T[]



5HPKQZKOT'XXG_YYGSSKRT

/``Oga Yr\\S\ \WQVb \c` ES`bS d]\ ^`W[WbWdS\ 2ObS\bg^S\ S\bVOZbS\ a]\RS`\ aWS Yr\\S\ OcQV =PXSYbS OcT\SV[S\ 2O\\ eS`RS\ OPS` \WQVb RWS =PXSYbS aSZPab W[ /` `Og USa^SWQVS`b a]\RS`\ ZSRWUZWQV RWS @STS`S\hdO`WOPZS\ 2WS =PXSYbS [ºaaS\ d][ UZSWQVS\ Bg^ aSW\ DS`eO\RbS aW\R S`ZOcPb RV Sa Yr\\S\ OcQV AcPBg^S\ RS` RS TW\WS`bS\ 9ZOaaS USa^SWQVS`b eS`RS\ ?a^VaP\\ 0aaPh #)

BP\\T[] e^] 8]bcP]iT] X] TX]T\ 0aaPh import java.util.*; public class Array14 { public static void main(String[] args) Calendar[] tage = new Calendar[3]; for (int i=0; i<3; i++) tage[i] = Calendar.getInstance(); System.out.println(tage[1]); } }

{

2Oa >`]U`O[[ 0aaPh # S`hScUb SW\S @STS`S\hdO`WOPZS cPVT 2WSaS VOb RWS 4ÉVWUYSWb OcT SW\ /``Og hc hSWUS\ ROa =PXSYbS d][ Bg^ 2P[T]SPa aO[[SZb ;Wb ]Tf eW`R RWS aSa /``Og S`hScUb 3a S\bVÉZb R`SW 9][^]\S\bS\ XSRS `STS`S\hWS`b OcT SW\ 1OZS\RO` =PXSYb bOUS

@STS`S\h

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ATXWd]VT] QT]dciT] PaaPhb



3KZNUJKTJKX)RGYY'XXG_Y

4º` ROa Y][T]`bOPZS /`PSWbS\ [Wb Y][^ZSbbS\ /``Oga UWPb Sa RWS AbO\RO`RYZOaaS 0a aPhb /QVbc\U( ROa O\VÉ\US\RS a Wab eWQVbWU AWS S\bVÉZb SW\WUS bcPcXR;SbV]RS\ RWS d][ >`]U`O[[WS`S` US\cbhb eS`RS\ Yr\\S\ c[ /``Oga h0  hc a]`bWS`S\ b^ac  hc dS`UZSWQVS\ T`dP[b ]RS`  PW\É` hc Rc`QVacQVS\ QX]PahBTPaRW ?a^VaP\\ 0aaPh $) B^acXTaT] \Xc STa 2[Pbb 0aaPhb public class Array15 { public static void main(String[] args) { int umsatz[] = {100,200,300,50,100,5,0,98,700,50,0,90}; java.util.Arrays.sort(umsatz); for (int wert: umsatz) { System.out.println(wert); } } } 7[ >`]U`O[[ 0aaPh $ eW`R RWS 9ZOaaS 0aaPhb d]ZZ_cOZWTWhWS`b O\USa^`]QVS\ 2O Rc`QV YO\\ OcT SW\S X\_^ac/\eSWac\U dS`hWQVbSb eS`RS\ ÎQd]V 3`abSZZS\ AWS SW\ \ScSa >`]U`O[[ 0aaPh % [Wb SW\S[ /``Og ROa Oca " 7\bSUS` 3ZS[S\bS\ PSabSVb 7\WbWOZWaWS`S\ AWS ROa /``Og [Wb RS\ ES`bS\  & ! # 5SPS\ AWS RWS c\a]`bWS`bS\ ES`bS O[ 0WZRaQVW`[ Oca a]`bWS`S\ AWS RO\OQV RWS ES`bS c\R USPS\ AWS S`\Scb RS\ /``Og7\VOZb Oca /`PSWbS\ AWS [Wb RS` X\_^ac/\eSWac\U ;»bd]Vbe^abRW[PV) import java.util.*; public class Array16 { public static void main(String[] args) int[] zahlen = {11, 23, 4, 15}; for (int zahl: zahlen) System.out.format("%d ", zahl); Arrays.sort(zahlen); System.out.println('\n'); for (int zahl: zahlen) { System.out.format("%d ", zahl); } } } !

{





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"%


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3W\ /``Og YO\\ =PXSYbS d]\ XSRS[ O\RS`S\ 2ObS\bg^ S\bVOZbS\ OZa] OcQV d][ Bg^ /``Og 2Oa VSWzb W\ 8OdO eS`RS\ [SV`RW[S\aW]\OZS /``Oga OZa /``Oga RSTW\WS`b RS`S\ 3ZS[S\bS eWSRS`c[ /``Oga aW\R dS`aQVOQVbSZbS /``Oga O``Og ]T O``Og 2WS 2STW\W bW]\ int matrix[4][3]; dS`SW\PO`b SW\S ;Ob`Wf d][ Bg^ X]c 3a eS`RS\ " X]c3ZS[S\bS O\USZSUb RWS XSeSWZa eWSRS` Oca ! X]c3ZS[S\bS\ PSabSVS\ 2S` HcU`WTT OcT RWS SW\hSZ\S\ 3ZS[S\bS S`T]ZUb c\bS` /\UOPS RS` PSWRS\ 7\RWhSa RWS XSeSWZa W\ SQYWUS\ 9ZO[[S`\ SW\USaQVZ]aaS\ aW\R( matrix[2][1] = 8; 2O[Wb eW`R ROa ! 3ZS[S\b OR`SaaWS`b c\R W\\S`VOZP RWSaSa ! 3ZS[S\ba ROa  3ZS [S\b 0SW RS` 2SYZO`ObW]\ eW`R ^`] AQVOQVbSZc\UabWSTS SW\ SQYWUSa 9ZO[[S`\^OO` PS\rbWUb C\R PSW[ HcU`WTT eS`RS\ a]dWSZ 9ZO[[S`\^OO`S O\USUSPS\ eWS RWS 2W[S\aW]\ RSa /``Oga O\UWPb 4º` RWS DS`O`PSWbc\U PWSbS\ aWQV USaQVOQVbSZbS U^aAQVZSWTS\ O\



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IfTXSX\T]bX^]P[Tb 0aaPh \Xc _aX\XcXeT] Ch_T] public class Array20 { public static void main(String[] args) int[][] matrix; matrix = new int [2][3]; matrix[0][0] = 1; matrix[0][1] = 2; matrix[0][2] = 3; matrix[1][0] = 4; matrix[1][1] = 5; matrix[1][2] = 6; } }

{

! !

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public class Array22 { public static void main(String[] args) char[][] zeichen; zeichen = new char[3][4]; char unicode = 97; // Fuellen mit Zeichen for(int i=0; i<3; i++) { for (int j=0; j<4; j++)

{

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Stand: 22.12.2005 13:39:00 ))

"& 0aaPhb P[b ?PaP\TcTa d]S ATcda]fTac QTX
zeichen[i][j] = unicode++; } // Ausgeben der Zeichen for(int i=0; i<3; i++) { for (int j=0; j<4; j++) { System.out.print(zeichen[i][j]); } System.out.println(); } } }



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public class Array24 { public static void main(String[] args) { int zahl = 125; int[] erg = dividieren(zahl); System.out.println("125 / 3 = " + erg[0]); System.out.println("Ganzzahliger Rest: " + erg[1]); } static int[] dividieren(int z) { int[] erg = {0,1}; erg[0] = z / 3; erg[1] = z % 3; return erg; } }

 

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{

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ATXWd]VT] QT]dciT] PaaPhb

for (int z : z2) System.out.println(z);

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public class Array32 { public static void main(String[] args) { int[] z1 = {11, 23, 4, 15}; int[] z2 = new int[z1.length]; System.arraycopy(z1, 0, z2, 0, z1.length); for (int z : z2) System.out.println(z); } } 2WS 9ZOaaS >QYTRc Wab RWS ;cbbS` OZZS` 9ZOaaS\ XSRS O\RS`S 9ZOaaS Wab RW`SYb ]RS` W\ RW`SYb ROd]\ OPUSZSWbSb 2Oa PSRScbSb ROaa RWS ;SbV]RS\ RWSaS` 9ZOaaS OZZS\ O\RS `S\ 8OdO9ZOaaS\ hc` DS`TºUc\U abSVS\ 2Ohc USVr`S\ cO RWS ;SbV]RS\ c^BcaX]V T`dP[b c\R OcQV RWS ;SbV]RS R[^]T ?a^VaP\\ 0aaPh"") 1T]dciT] STa VTTaQcT]
public class Array33 { public static void main(String[] args) int[] z1 = {11, 23, 4, 15}; int[] z2 = z1.clone(); for (int z : z2) System.out.println(z); } }

{

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z1[2] = 100;

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# 4abcT[[T] e^] BcaX]V>QYTZcT]



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str = new String("Dies ist eine Zeichenkette");

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Stand: 22.12.2005 13:39:00 ))

# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb



String str = new String("Dies ist eine Zeichenkette");

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String str = "Dies ist eine Zeichenkette";

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{

ÎQd]V id\ ?a^VaP\\ BcaX]V 2Oa >`]U`O[[ S`hScUb SW\S\ C[eO\RZc\UaTSVZS` ÍPS`ZSUS\ AWS eOa RS` 5`c\R ROTº` Wab c\R Y]``WUWS`S\ AWS ROa >`]U`O[[ a] ROaa Sa c[USeO\RSZb c\R OcaUSTºV`b eS`RS\ YO\\ ;»bd]VbWX]fTXb

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public class String02 { public static void main(String[] args) String vorname = null; System.out.println(vorname); } }

{

ÎQd]VT] id\ ?a^VaP\\ BcaX]V! Ò\RS`\ AWS RWS ES`bhceSWac\U W\ RS` ! HSWZS eWS T]ZUb( String vorname = "0"; =RS` eS\\ AWS e]ZZS\ OcQV a]( String vorname = "Null"; !!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# 4abcT[[T] e^] BcaX]V>QYTZcT]

EO\RSZ\ AWS RO\OQV ROa >`]U`O[[ c[ c\R bSabS\ AWS Sa ÍPS`ZSUS\ AWS eSZQVS /` PSWbaa^SWQVS`^ZÉbhS W[ =`WUW\OZ^`]U`O[[ Phe \OQV RWSaS` Ò\RS`c\U PSZSUb aW\R 2Oa T]ZUS\RS >`]U`O[[ [OQVb RS\ C\bS`aQVWSR heWaQVS\ ]d[[ c\R SW\S[ ZSS`S\ =PXSYb \]QV SW\[OZ RScbZWQV ?a^VaP\\ BcaX]V") ]d[[ Xbc ]XRWc Q[P]Z

public class String03 { public static void main(String[] args) String vorname = " "; System.out.println(vorname); } }

{

7[ /`PSWbaa^SWQVS` eS`RS\ Rc`QV ROa >`]U`O[[ T]ZUS\RS >ZÉbhS PS\rbWUb c\R O\US ZSUb( =PXSYbeS`b( Q[P]Z

d]`\O[S `STS`S\hWS`b

/PP"( =PXSYb W[ A^SWQVS`( @STS`S\hdO`WOPZS c\R =PXSYbeS`b 2WS @STS`S\hdO`WOPZS e^a]P\T S\bVÉZb SW\S\ DS`eSWa OcT ROa SWUS\bZWQVS Ab`W\U]PXSYb 2WSaSa Ab`W\U]PXSYb S\bVÉZb RS\ ES`b   PZO\Y Phe a^OQS 2Oa Wab ZOcb C\WQ]RSbO PSZZS RS` VSfORShW[OZS ES`b   PW\É`(   ES\\ ROUSUS\ RWS @STS`S\hdO`WOPZS RS\ ES`b ]d[[ S\bVÉZb a] UWPb Sa YSW\ Ab`W\U]PXSYb OcT ROa aWS dS` eSWab



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3W\ Ab`W\UZWbS`OZ Wab SW\ BSfb RS` SW\USaQVZ]aaS\ Wab W\ S^__T[cT] 6]QVY][[Oa \WQVb W\ SW\TOQVS\ 6]QVY][[Oa eWS RWPaES`bS A] eWS RWPa:WbS`OZS YO\\ OcQV SW\ Ab`W\UZWbS`OZ PSZWSPWUS 3aQO^SAS_cS\hS\ S\bVOZbS\ ?a^VaP\\ BcaX]V#) BcaX]V[XcTaP[T d]S 4bRP_TbT`dT]iT] \Xc Bh]cPgUTW[Ta public class String04 { public static void main(String[] args) { String str = 'Text \n mit Zeilenwechsel'; System.out.println(str); } } ÎQd]V id\ ?a^VaP\\ BcaX]V# 2Oa >`]U`O[[ S\bVÉZb SW\S\ Ag\bOfTSVZS` Ab`W\UZWbS`OZS [ºaaS\ W\ /\TºV`c\Uaab`W QVS\ abSVS\ 0WbbS Y]``WUWS`S\ AWS RWSa c\R TºV`S\ AWS ROa >`]U`O[[ Oca !!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb



3KZNUJKTJKX)RGYY9ZXOTM

1UTYZX[QZUXKT 0SW[ 3`hScUS\ d]\ \ScS\ =PXSYbS\ eW`R W[[S` SW\ a] US\O\\bS` 9]\ab`cYb]` OcT US`cTS\ 2WSa Wab SW\S PSa]\RS`S 4]`[ SW\S` ;SbV]RS RS` XSeSWZWUS\ 9ZOaaS c\R S` a]`Ub ROTº` ROaa RWS DO`WOPZS\ RWS hc RS[ =PXSYb USVr`S\ W\WbWOZWaWS`b eS`RS\ 4º` ROa 3`abSZZS\ d]\ \ScS\ Ab`W\U]PXSYbS\ UWPb Sa W\ RS` 9ZOaaS BcaX]V dWSZS c\bS` aQVWSRZWQVS 9]\ab`cYb]`S\ h 0 // Leeres String-Objekt erzeugen (das Argument ist blank) String str1 = new String(); ]RS` // Kopie des Argument-Strings als Objekt erzeugen String str2 = new String("Meyer"); 2WS 9ZOaaS BcaX]V S\bVÉZb [SV` OZa # ;SbV]RS\ hc[ /`PSWbS\ [Wb HSWQVS\YSbbS\ h0 Tº`  ROa DS`YSbbS\ d]\ Ab`W\Ua  ROa 3fb`OVWS`S\ Oca BSWZab`W\Ua  ROa >]aWbW]\WS`S\ W\\S`VOZP RSa Ab`W\Ua  ROa 3`aSbhS\ d]\ HSWQVS\





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public class String05 { public static void main(String[] args) { String vorname = "Roman"; String nachname = "Merker"; String name1, name2; name1 = vorname + " " + nachname; // 1.Möglichkeit name2 = vorname.concat(" " + nachname); // 2.Möglichkeit System.out.println(name1); System.out.println(name2); } }

!!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

#!


1UT\KXZOKX[TM`]OYINKTVXOSOZO\KT:_VKT[TJ9ZXOTMY

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb

RWS`b eS`RS\ c\R RWS W\bS`\S 2O`abSZZc\U RS` HSWQVS\  ! eS\\ aWS OZa BcaX]V PS VO\RSZb eS`RS\ :rac\UaVW\eSWaS aWSVS 9O^WbSZ ! ÎQd]V !( ;]RWTWhWS`S\ AWS ROa >`]U`O[[ BcaX]V&YPeP a] ROaa RS` 9][[S\bO` W\ RS` R`WbbZSbhbS\ HSWZS S\bTS`\b eW`R ÍPS`^`ºTS\ AWS RWS /caUOPS RWSaS` HSWZS c\R dS` UZSWQVS\ AWS RWS 3`USP\WaaS ?a^VaP\\ BcaX]V') :^]eTacXTaT] e^] BcaX]Vb X] 0aaPhb e^] 1hcTb public class String08 { public static void main(String[] args) String vorname = "Roman"; byte[] zeichen = vorname.getBytes(); } }

{

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ÎQd]V id\ ?a^VaP\\ BcaX]V( 0WbbS Sf^S`W[S\bWS`S\ AWS [Wb RS[ >`]U`O[[ c[ RS\ C\bS`aQVWSR heWaQVS\ ++ c\R RS` ;SbV]RS T`dP[b VS`OcahcTW\RS\ !!"

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

#!
VÉ\][S\ S`YZÉ`b eS`RS\- 2S\\ \Obº`ZWQV UWPb Sa OcQV VWS`Tº` Z]UW aQVS 3`YZÉ`c\US\ 4aZ[Êad]V

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+OT`KRTK@KOINKTUJKX:KORYZXOTMY\KXGXHKOZKT

3W\ Ab`W\U YO\\ Tº` RWS DS`O`PSWbc\U eWS SW\ /``Og Oca SW\hSZ\S\ 1VO`OQbS` PSVO\ RSZb eS`RS\ 2Oa YO\\ W\ dWSZS\ 4ÉZZS\ aW\\d]ZZ aSW\ h0 eS\\ XSRSa SW\hSZ\S HSW QVS\ W\ RS` HSWQVS\YSbbS OPUST`OUb c\R SdS\bcSZZ dS`O`PSWbSb eS`RS\ a]ZZ ?a^VaP\\ BcaX]V ) 3T] 1dRWbcPQT] a bdRWT] public class String10 { public static void main(String[] args) { String s1 = "Erwin Merker"; for (int i=0; i<s1.length(); i++) if (s1.charAt(i) == 'r') System.out.println("Buchstabe r " + "steht auf Stelle " + i); } } ÎQd]V) 0WbbS aQV`SWPS\ AWS SW\ \ScSa >`]U`O[[ ROa W[ Ab`W\U D]USZ\Sab ROa E]`b \Sab Sfb`OVWS`b W\ SW\S` \ScS\ Ab`W\UDO`WOPZS\ a^SWQVS`b c\R O[ 0WZRaQVW`[ OcaUWPb ;»bd]VbWX]fTXb) 3a UWPb RWS ;SbV]RS bdQbcaX]V) PWbbS YZÉ`S\ AWS RWS 3W\aObh[rU ZWQVYSWb RWSaS` ;SbV]RS O\VO\R RS` />72]Yc[S\bObW]\ !!#

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb

;»bd]Vbe^abRW[PV

public class String11 { public static void main(String[] args) String s1 = "Vogelnest"; String s2 = s1.substring(5,9); System.out.println(s2); } }

{

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public class String12 { public static void main(String[] args) { String name = "Merker"; System.out.println("Steinfurt".length()); System.out.println(name.toUpperCase()); } } ÒV\ZWQV eWS PSW /``Oga YO\\ [O\ OcQV Tº` Ab`W\Ua RWS :É\US TSababSZZS\ 0SW /``Oga YO\\ [O\ RS\ ES`b RS` DO`WOPZS\ [T]VcW OPT`OUS\ 0SW Ab`W\Ua aS\RSb [O\ RWS


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{

!!$

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

#!
EOa PSW RWSaS` Ò\RS`c\U W[ A^SWQVS` US\Oc ^OaaWS`b eS`RS\ eW` \OQVT]ZUS\R \ÉVS` O\OZgaWS`S\



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Hc[ 3W\abWSU W\ RWSaSa BVS[O hc\ÉQVab T]ZUS\RS 0SVOc^bc\U( 3W\ =PXSYb RS` 9ZOaaS BcaX]V Wab c\dS`É\RS`ZWQV W[[cbOPZS RV [O\ YO\\ \c` ZSaS\R RO`OcT hcU`SWTS\ ES\\ SW\ Ab`W\U=PXSYb SW\[OZ [Wb SW\S[ ES`b USTºZZb Wab RO\\ YO\\ RWSaS` ES`b \WS[OZa USÉ\RS`b eS`RS\ EOa PSRScbSb ROa  c\R eOa ^OaaWS`b h0 PSW /caTºV`c\U RS` ;SbV]RS aT_[PRT W[ >`]U`O[[ BcaX]V "- /\e]`b( 3a eW`R SW\ Y][^ZSbb \ScS` Ab`W\U S`abSZZb c\R RO\\ RWS @STS`S\h W\ b S`aSbhb Rc`QV RWS A^SWQVS`OR`SaaS RSa \ScS\ =PXSYba 2Oa Wab RS` 5`c\R eO`c[ OZZS ;SbV]RS\ RWS SW\ Ab`W\U=PXSYb [] RWTWhWS`S\ OZa @ºQYUOPSbg^ SW\ Ab`W\U]PXSYb VOPS\ /PS` eOa ^OaaWS`b PSW SW\S` SW\TO QVS\ ES`bShceSWac\U- ?a^VaP\\ BcaX]V #) 0dRW

SXT ATaTaT]iePaXPQ[T Ê]STac bXRW public class String14 { public static void main(String[] args) String s1 = new String("Heidi"); String s2 = s1; System.out.println(s1 == s2); s2 = "Heidi"; System.out.print(s1 == s2); } }

{

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RO\\ Yr\\S\ RWS @STS`S\hS\ W\ b c\R b! UZSWQV aSW\ DS`ZOaaS\ YO\\ [O\ aWQV RO` OcT OPS` \WQVb RS\\ RWSa YO\\ d]\ XSRS` @c\BW[SC[USPc\U O\RS`a `SOZWaWS`b eS` RS\ ÎQd]V id\ ?a^VaP\\ BcaX]V # 9ZÉ`S\ AWS eWS OcT 7V`S[ AgabS[ RS` DS`UZSWQV s1 == s2 OcaTÉZZb eS\\ AWS d]` VS` OcQV RS` DO`WOPZS\ b! RS\ ES`b 6SWRW Sf^ZWhWb hceSWaS\ !!%

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb

 

3KZNUJKTJKX)RGYY9ZXOTM([ORJKX =GX[SMOHZKYJXKO9ZXOTM1RGYYKT%

2Oa ]PS\ PSaQV`WSPS\S DS`TOV`S\ Wab `SZObWd OcTeÉ\RWU 2WS 3\beWQYZS` aW\R ]TTS\ aWQVbZWQV ROd]\ OcaUSUO\US\ ROaa RWS D]`bSWZS RS` US[SW\aO[S\ `]U`O[[a dS`Yº`hb ]RS` dS`ZÉ\US`b eS`RS\ 2ORc`QV c\bS`aQVSWRS\ aWQV RWSaS PSWRS\ 9ZOaaS\ d]\ BcaX]V 4º` 3W\abSWUS` W\ RWS >`]U`O[[WS`c\U [Wb 8OdO UWZb UO\h SW\TOQV T]ZUS\RS @SUSZ( ES\\ Ab`W\UdO`WOPZS VÉcTWU USÉ\RS`b eS`RS\ [ºaaS\ a]ZZbS OZa 2ObS\bg^ BcaX]V1dX[ STa c\R \WQVb BcaX]V USeÉVZb eS`RS\ 2WSaS S\bVÉZb US\Oc eWS BcaX]V1dU hOVZ`SWQVS ;SbV]RS\ hc[ DS`É\RS`\ d]\ Ab`W\UW\VOZbS\ h0 P__T]S X]bTac ST[TcT ]RS` aT_[PRT

?a^VaP\\ BcaX]V $) 0aQTXcT] \Xc 2[Pbb BcaX]V1dX[STa public class String15 { public static void main(String[] args) { StringBuilder sb1 = new StringBuilder("Vogel"); sb1.append("nest"); // Anhaengen System.out.println(sb1); sb1.replace(0,5,"Oster"); // Ersetzen System.out.println(sb1); sb1.delete(6,9); // Loeschen System.out.println(sb1); sb1.insert(6, " ist Urlaub"); // Einfuegen System.out.println(sb1); } } ?a^VaP\\ BcaX]V %) FT]] SXTbTb 1TXb_XT[ \Xc STa :[PbbT BcaX]V d]S STa QYTZcT P]VT[TVc public class String16 { public static void main(String[] args) { StringBuilder str = new StringBuilder(). append("Dieser ").append("Satz ").append("wird "). append("als ein ").append("Objekt angelegt"); System.out.println(str); } } !!&

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

## BcaX]Vb P[b 2^\\P]S[X]T?PaP\TcTa



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public class String20 i public static void main(String[] args) for (int i=0; i < args.length; i++) System.out.println(args[i]); } k

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public class String21 { public static void main(String[] args) { if (args.length == 0) System.out.println("Eingabedaten fehlen"); } } ÎQd]V 0WbbS Q]RWS`S\ AWS SW\ \ScSa >`]U`O[[ ROa T]ZUS\RS 4]`[OZ^`ºTc\U Rc`QVTºV`b c\R USUSPS\S\TOZZa SW\S S\ba^`SQVS\RS 4SVZS`[SZRc\U OcaUWPb( 3a [ºaaS\ heWaQVS\ 

!!'

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Stand: 22.12.2005 13:39:00 ))

# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb

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public class String22 { public static void main(String[] args) { if (args.length == 0 || args.length > 3) System.out.println("Bitte 1 - 3 Parameter eingeben"); for (int i=0; i < args.length; i++) { if (args[i].length() > 5) { System.out.print("Mehr als 5 Zeichen nicht erlaubt "); System.out.println(args[i]); } } }

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public class String23 { public static void main (String[] args) { int anzahl = 0; if (args.length == 1) { if (args[0].equals("Help")) { System.out.println("Aufruf: java String23 Anzahl"); System.exit(1); } } try { anzahl = Integer.parseInt(args[0]); } catch (Exception e) { System.out.println("Es muss die Anzahl angegeben sein"); System.exit(0); } System.out.println("Die Anzahl ist: " + anzahl); } }

!"

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#$ ITa[TVT] e^] CTgc

 

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public class Zerlegen01 { public static void main(String[] args) { String s1 = "Dies ist ein Satz, der zerlegt wird"; String[] ergebnis = s1.split(" "); for (int i=0; i<ergebnis.length; i++) System.out.println(ergebnis[i]); } } 2Oa AbO\RO`RB`S\\hSWQVS\ RSZW[WbS` Tº` ROa A^ZWbbS\ Wab SW\S :SS`abSZZS PZO\Y ÎQd]V id\ ?a^VaP\\ ITa[TVT] Ò\RS`\ AWS ROa :WbS`OZ ROa W\ RS\ Ab`W\U b ºPS`b`OUS\ eW`R a] OP ROaa [SV`S`S :SS`abSZZS\ heWaQVS\ RS\ Er`bS`\ Xbc c\R TX] abSVS\ >`ºTS\ AWS RO\OQV RWS >`] U`O[[OcaUOPS 6W\eSWa( Hc[ 0SaQV`SWPS\ d]\ dO`WOPZS\ B`S\\hSWQVS\ PS\rbWUb [O\ @SUcZÉ`S /ca R`ºQYS 2WS :rac\U UWPb Sa W[ /PaQV\Wbb "$



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Stand: 22.12.2005 13:39:00 ))

# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb

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import java.util.Scanner; public class Scanner01 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); eingabe.useDelimiter(","); String s =eingabe.next(); System.out.println("Erster Teil: " + s); s =eingabe.next(); System.out.println("Zweiter Teil: " + s); } } ÎQd]V id\ ?a^VaP\\ BRP]]Ta 5SPS\ AWS hc[ BSabS\ PWbbS T]ZUS\RS\ AObh SW\( C[ =PXSYbS hc S`hScUS\ PS\cbhb [O\ ROa AQVZºaaSZe]`b \Se EWQVbWU Wab ROa 9][[O W[ AObh 2Oa 3`USP\Wa eW`R aSW\ ROaa RWS S`abS AObhVÉZTbS OZa 3QV] eWSRS` OcaUSUSPS\ eW`R Hc[ /\hSWUS\ RS` heSWbS\ AObhVÉZTbS [caa SW\ eSWbS`Sa B`S\\hSWQVS\  9][[O SW\USUSPS\ eS`RS\ 2WS 9ZOaaS BRP]]Ta O`PSWbSb [Wb SW\S[ d]`OcaaQVOcS\RS\ :SaS\ RSa BSfbSa 2Ohc UWPb Sa RWS ;SbV]RS WPb=Tgc 2WSaS ;SbV]RS Wab PSa]\RS`a VWZT`SWQV PSW[ 4]`[cZWS `S\ d]\ :SaSaQVZSWTS\  aWS ^`ºTb ]P eSWbS`S 2ObS\ d]`ZWSUS\ c\R RO\\ YO\\ hc[ SWUS\bZWQVS\ :SaS\ RWSaS` 2ObS\ RWS ;SbV]RS ]Tgc PS\cbhb eS`RS\ ?a^VaP\\ BRP]]Ta!) ;TbT] X] BRW[TXUT \Xc WPb=Tgc d]S ]Tgc import java.util.Scanner; class Scanner02 { public static void main(String[] args) { Scanner eingabe = new Scanner(System.in); String zeilenende = System.getProperty("line.separator"); eingabe.useDelimiter(zeilenende); // Delimiter aendern while (eingabe.hasNext()) System.out.println(eingabe.next()); }

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#% ATVd[ÊaT 0dbSa¶RZT

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# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb

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!""

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Stand: 22.12.2005 13:39:00 ))

#% ATVd[ÊaT 0dbSa¶RZT

3W\S VÉcTWUS /cTUOPS\abSZZc\U W\ RS` 32D Wab ROa HS`ZSUS\ SW\Sa Ab`W\Ua W\ aSW\S 0S abO\RbSWZS O\VO\R d]\ B`S\\hSWQVS\ 6ÉcTWU bOcaQVS\ >`]U`O[[S 2ObS\ ºPS` 7[ ^]`b3f^]`bBSfbRObSWS\ Oca 7\ RWSaS\ abSVb RWS 7\T]`[ObW]\ RO\\ hSWZS\eSWaS SW\ TOQV Rc`QV AS[WY]Z]\ ]RS` 9][[O USb`S\\b 1AD4WZSa C[ RWSaS 2ObS\ \OQV RS[ 3W\ZSaS\ eWSRS` hc hS`ZSUS\ PWSbSb RWS >ObbS`\9ZOaaS RWS aSV` \ºbhZWQVS ;S bV]RS b_[Xc 2WSaS ;SbV]RS hS`ZSUb SW\S\ Ab`W\U O\VO\R SW\Sa `SUcZÉ`S\ /caR`cQYSa c\R abSZZb RWS 3`USP\WaaS W\ SW\ /``Og ?a^VaP\\ ATV4g") ITa[TVT] e^] BcaX]Vb 
ÎQd]V id\ ?a^VaP\\ ATV4g" Ò\RS`\ AWS ROa >`]U`O[[ a] OP ROa OZa B`S\\hSWQVS\ a]e]VZ AS[WY]Z]\ 9][[O c\R EVWbSa^OQS dS`eS\RSb eS`RS\ 2S` hc c\bS`acQVS\RS Ab`W\U Wab ŸSW\a heSW) R`SWdWS`” ;»bd]Vbe^abRW[PV) import java.util.regex.*; public class RegEx04 { public static void main(String[] args) { Pattern p = Pattern.compile(";|,|\\s"); String[] erg = p.split("eins zwei;drei,vier"); for (int i=0; i<erg.length; i++) System.out.println(erg[i] + '\n'); } } ÎQd]V id\ ?a^VaP\\ ITa[TVT] Pdb 0QbRW]Xcc #$ )

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# ITXRWT]ZTccT] P]fT]ST] bcaX]Vb

;»bd]Vbe^abRW[PV public class Zerlegen02 { public static void main(String[] args) { String s1 = "Dies ist ein Satz, der zerlegt werden soll"; String[] ergebnis = s1.split(" +"); for (int i=0; i<ergebnis.length; i++) System.out.println(ergebnis[i]); } }



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!"$

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#& BcaX]Vb d]S D]XR^ST

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public class Utf08 { public static void main(String[] args) String str1 = "A\u0001\u0093";

throws Exception {

// Konvertieren String in UTF byte[] b1 = str1.getBytes("UTF8"); for (int i=0; i
(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))





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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

$ 4afTXcTa]ST :^]eTacXTad]V QTX TX]UPRWT] Ch_T]

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public class Konversion03 { public static void main(String[] args) byte b = 66; System.out.println((char)b); } }

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{ !#



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Stand: 22.12.2005 13:39:00 ))

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public static void main(String[] args) short a = 110; float b = 456789.1f; float erg = a * b; System.out.println(erg); }

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2Oa \ÉQVabS 0SWa^WSZ RS[]\ab`WS`b ROaa SW\S Ocb][ObWaQVS Bg^O\^Oaac\U OcQV PSW RS` ÍPS`UOPS d]\ /`Uc[S\bS\ S`T]ZUb 2S` OYbcSZZS >O`O[SbS` eW`R O\US^Oaab O\ RS\ Bg^ RSa T]`[OZS\ >O`O[SbS`a RS` d][ 3[^TÉ\US` S`eO`bSb eW`R ?a^VaP\\ :^]eTabX^]&) Ch_P]_Pbbd]V QTX TX]Ta ?PaP\TcTa¶QTaVPQT public class Konversion07 { public static void main (String[] args) { ausgeben(25); } static void ausgeben(double zahl) { System.out.println(zahl); } } ÎQd]V id\ ?a^VaP\\ :^]eTabX^]& ;OQVS\ AWS T]ZUS\RSa 3f^S`W[S\b( Ò\RS`\ AWS RS\ Bg^ RSa T]`[OZS\ >O`O[SbS`a d]\ S^dQ[T OcT X]c Ò\RS`\ AWS OczS`RS[ RS\ ;SbV]RS\OcT`cT a] ROaa OZa OYbcSZZS` >O `O[SbS` SW\ 5ZSWbY][[OeS`b ºPS`USPS\ eW`R 7ab SW\S TSVZS`T`SWS C[eO\RZc\U [rUZWQV- ES\\ \SW\ TW\RS\ AWS W\ RS[ \ÉQVabS\ /PaQV\Wbb RWS :rac\U Tº` RWSaS /cTUOPS !#

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Stand: 22.12.2005 13:39:00 ))

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{

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public class Konversion10 i public static void main (String[] args) { ausgeben((int)25.3); } static void ausgeben(int zahl) { System.out.println(zahl); } } 2c`QV RWS Sf^ZWhWbS /\UOPS RSa HWSZbg^a eW`R SW\S C[eO\RZc\U RSa 2ObS\bg^a d][ >`]U`O[[WS`S` S`hec\US\ 2O[Wb ºPS`\W[[b S` OcQV RWS DS`O\be]`bc\U ROTº` ]P ROa 3`USP\Wa aW\\d]ZZ Wab ]RS` \WQVb ?a^VaP\\ :^]eTabX^]

) Ch_d\fP]S[d]V QTX 6[TXcZ^\\PIPW[T]

public class Konversion11 { public static void main(String[] args) double a = 12345678E300; float b = a; // Fehler ! System.out.println(a); } } ÎQd]V \Xc ?a^VaP\\ :^]eTabX^]

{

2Oa >`]U`O[[ S\bVÉZb SW\S\ T]`[OZS\ 4SVZS` RS` PSW RS` C[eO\RZc\U TSabUSabSZZb eW`R 0WbbS Y]``WUWS`S\ AWS RS\ ?cSZZbSfb ?a^VaP\\ :^]eTabX^] !) 4g_[XiXcTb 2PbcX]V \Xc 3PcT]eTa[dbc

public class Konversion12 { public static void main(String[] args) { double a; long b = 12345678912348999L; a = b; // korrekt b = (long)a; // Datenverlust System.out.println(b); } } 2WS 0ShSWQV\c\U Bg^c[eO\RZc\U Yr\\bS acUUS`WS`S\ ROaa RWS DS`Yº`hc\U RSa 2ObS\bg^a ROhc TºV`b ROaa RS` \ScS ES`b RS` DO`WOPZS\ \OQV SW\S[ OcaUSTSWZbS\ DS`TOV`S\ S`[WbbSZb eW`R 7\ EW`YZWQVYSWb Wab Sa UO\h SW\TOQV a] ROaa \WQVb c[USeO\ RSZb a]\RS`\ ZSRWUZWQV OPUSaQV\WbbS\ Phe OcTUSTºZZb eW`R

!#"

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

$" ETaP[[VT\TX]Ta]ST :^]eTacXTad]V QTX ATUTaT]ich_T]

8Sbhb T]ZUb \]QV SW\ 0SWa^WSZ ROa hSWUb ROaa OcQV SW\S S`eSWbS`\RS 9]\dS`bWS`c\U [O\QV[OZ S`hec\US\ eS`RS\ [caa RO[Wb ºPS`VOc^b SW\ Y]``SYbSa 3`USP\Wa S\babS VS\ YO\\ ?a^VaP\\ :^]eTabX^] ") 4afTXcTa]STb 2PbcX]V TaifX]VT] public class Konversion13 { public static void main(String[] args) { double erg; int x = 5; int y = 3; erg = x / y; // Abschneiden System.out.println(erg); erg = (double)x / y; // Korrekt System.out.println(erg); } }




5S\S`SZZ Wab SW\S 9]\dS`bWS`c\U PSW @STS`S\hbg^S\ \c` [rUZWQV eS\\ SW\S DS` eO\RbaQVOTb PSabSVb heWaQVS\ RS\ 9ZOaaS\ 3a [caa aWQV OZa] c[ SW\S =PS` c\R C\bS`YZOaaS VO\RSZ\ RV aWS [ºaaS\ W\ SW\S` DS`S`Pc\UaPShWSVc\U abSVS\ Rc`QV ROa AQVZºaaSZe]`b TgcT]Sb 9SW\S >`]PZS[S UWPb Sa eS\\ RWS @STS`S\h SW\S` C\bS`YZOaaS c[USRScbSb eW`R OcT SW\S @STS`S\h RS` =PS`YZOaaS 8SRS C\bS`YZOaaS S\bVÉZb OZZS 3ZS[S\bS RS` =PS`YZOaaS a] ROaa RWSaS C[RScbc\U heO` hc 7\T]`[ObW]\adS`Zcab TºV`S\ YO\\ OPS` bSQV\WaQV c\R T]`[OZ YSW\S >`]PZS[S dS`c`aOQVb RS\\ RWS AcPYZOaaS YO\\ c\R VOb [W\RSabS\a ROa OZZSa eOa RWS =PS`YZOaaS S\bVÉZb ?a^VaP\\ :^]eTabX^]!) 8\_[XiXcT Ch_P]_Pbbd]V QTX ETaP[[VT\TX]Tad]V public class Konversion20 { public static void main(String[] args) A referenzA = new A(); B referenzB = new B(); referenzA = referenzB; } } class A {} class B extends A {}

{

2WS ES`bShceSWac\U d]\ 0 \OQV / Wab ]V\S >`]PZS[S [rUZWQV ROPSW TW\RSb SW\S Oc b][ObWaQVS 9]\dS`bWS`c\U RSa Bg^a d]\ c\bS\ 0 \OQV ]PS\ / abObb 2OPSW PZSW PS\ W\bS`\ RWS a^ShWSZZS\ 7\T]`[ObW]\S\ ºPS` RWS AcPYZOaaS S`VOZbS\ !##

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

$ Ch_d\fP]S[d]VT] eTabcTWT] RPbcX]V



9VK`OGROYOKXKTJK1UT\KXZOKX[TMHKO8KLKXKT`Z_VKT

5O\h O\RS`a Wab RWS AWbcObW]\ PSW SW\S` @STS`S\h OcT RWS =PS`YZOaaS RWS \c\ OZa @STS `S\h W\bS`^`SbWS`b eS`RS\ a]ZZ RWS OcT SW\ ROd]\ OPUSZSWbSbSa =PXSYb hSWUb 2WS C\ bS`YZOaaS S\bVÉZb [SV` 7\T]`[ObW]\S\ /bb`WPcbS c\R]RS` ;SbV]RS\ OZa RWS Ac^S` YZOaaS 2SaeSUS\ eW`R RWSaS` DS`acQV d][ 1][^WZS` OPUSZSV\b ?a^VaP\\ :^]eTabX^]! ) ATUTaT]ich_ b_TiXP[XbXTaT] public class Konversion21 { public static void main(String[] args) { A referenzA = new A(); B referenzB = new B(); referenzB = referenzA; // Fehler, inkompatibel } } class A {} class B extends A {} 2S` >`]U`O[[WS`S` YO\\ OPS` OcQV VWS` ROa 1OabW\U S`heW\US\  US\Oc eWS PSW RS\ ^`W[WbWdS\ 2ObS\bg^S\ 2WS 9]\dS`bWS`c\U eW`R OcQV PSW @STS`S\hbg^S\ S`hec\US\ Rc`QV /\UOPS RSa 1Oab=^S`Ob]`a 2S` 1Oab=^S`Ob]` PSabSVb Oca RS[ _TaPc^a QTX ATUTaT]ich_T]

public class Konversion22 { public static void main(String[] args) A referenzA = new A(); B referenzB = new B(); referenzB = (B)referenzA; } } class A {} class B extends A {}

{

8Sbhb Wab SW\S TSVZS`T`SWS C[eO\RZc\U [rUZWQV /PS`( 0SW[ DS`acQV ROa >`]U`O[[ OcahcTºV`S\ UWPb Sa SW\S\ /PP`cQVTSVZS` @c\BW[S3``]`( 1Oab3fQS^bW]\ 2S` 5`c\R Tº` RWSaS\ 4SVZS`( EW` VOPS\ dS`acQVb Oca SW\S[ @STS`S\hbg^ RS` OZZUS [SW\S\ 9ZOaaS / SW\S\ a^ShWOZWaWS`bS\ Bg^ RS` 9ZOaaS 0 hc [OQVS\ 2Oa USVb \WQVb  ]RS` PSaaS` USaOUb ROa USVb \c` eS\\ Sa aWQV OcQV eW`YZWQV c[ RWSaS\ a^ShWOZWaWS` bS\ Bg^ VO\RSZb ;SV` AQVSW\ OZa ASW\ ZÉzb RWS 8D; \WQVb hc !#$

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

$# B_TiXP[XbXTaT]ST :^]eTacXTad]V QTX ATUTaT]ich_T]

EWQVbWUS @SUSZ( `]U`O[[WS`S` aWQV UO\h aWQVS` Wab ROaa RWS @STS`S\h W\ EOV`VSWb SW\S @STS`S\h OcT RWS AcPYZOaaS Wab RO`T ROa 1OabW\U S`hec\US\ eS`RS\ O\RS`\TOZZa TºV`b RS` Sf^ZWhWbS 1Oab hc SW\S[ @c\BW[S4SVZS` FXT ZP]] bXRWTaVTbcT[[c fTaST] SPbb ZTX]T ;PdUiTXcUTW[Ta T]cbcTWT]. 3a UWPb SW\S\ =^S`Ob]` [Wb RSaaS\ 6WZTS hc` :OcThSWb ºPS`^`ºTb eS`RS\ YO\\ OcT eSZQVS\ 2ObS\bg^ SW\S @STS`S\h dS`eSWab( X]bcP]RT^U 2WSa Wab RS` R`W\US\R S[^ T]VZS\S ESU c[ aWQVS` hc abSZZS\ ROaa YSW\ TOZaQVSa 1OabW\U Rc`QVUSTºV`b eW`R ?a^VaP\\ :^]eTabX^]!") ;PdUiTXcch__a¶Ud]V SdaRW X]bcP]RT^U public class Konversion23 { public static void main(String[] args) { A referenzA = new A(); B referenzB = new B(); if (referenzA instanceof B) referenzB = (B)referenzA; else System.out.println("Kein Casting möglich"); } } class A {} class B extends A {} 2Oa \ÉQVabS 0SWa^WSZ RS[]\ab`WS`b PSWRS /`bS\ RS` 9]\dS`bWS`c\U d]\ @STS`S\hS\ ?a^VaP\\ :^]eTabX^]!#) ETaP[[VT\TX]Tad]V d]S B_TiXP[XbXTad]V SdaRW 2PbcX]V

import java.awt.Point; public class Konversion24 { public static void main(String[] args) Point p1, p2; Object object;

{

p1 = new Point(100,200); p2 = new Point(300,400); object = new Object(); object = p1; // generalisierende Konvertierung p2 = (Point)object; // spezialisierende Konvertierung System.out.println(p2); } } !#%

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

$ Ch_d\fP]S[d]VT] eTabcTWT] RPbcX]V



:_V;S]GTJR[TM`]OYINKTKOTLGINKT[TJ8KLKXKT`Z_VKT

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•

Oca @STS`S\hbg^S\ RWS S\ba^`SQVS\RS\ ^`W[WbWdS\ Bg^S\ VS`OcahchWSVS\

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<]beS\RWU Wab RS` 3W\aObh RWSaS` E`O^^S`9ZOaaS\ h0 W[[S` RO\\ eS\\ SW\S ;S bV]RS OcaaQVZWSzZWQV =PXSYbS OZa] @STS`S\hbg^S\ OZa >O`O[SbS` OYhS^bWS`b c\R YSW \S ^`W[WbWdS\ 2ObS\bg^S\ hcZÉaab 7\ RS\ [SWabS\ 4ÉZZS\ S`T]ZUb RO\\ ROa 3W\^O QYS\ e`O^^W\U P]fW\U Ocb][ObWaQV RV Oca RS[ SW\TOQVS\ 2ObS\bg^ eW`R ]V\S PSa]\RS`S D]`YSV`c\U Rc`QV RS\ >`]U`O[[WS`S` SW\ @STS`S\hbg^ RS` E`O^^S`YZOaaS S`hScUb 2WSaS` D]`UO\U eW`R /cb]P]fW\U US\O\\b C[USYSV`b S`T]ZUb OcQV ROa /ca^OQYS\ c\P]fW\U W\ RS\ [SWabS\ 4ÉZZS\ Ocb][ObWaQV W\bBg^

=PXSYb

@STS`S\hD



/PP #( 0SWa^WSZ Tº` ROa E`O^^S\ SW\S` ^`W[WbWdS\ W\bDO`WOPZS\ 7\ [O\QVS\ AWbcObW]\S\ [caa ROa /`PSWbS\ [Wb RS\ E`O^^S`9ZOaaS\ OPS` OcaR`ºQY ZWQV Q]RWS`b eS`RS\ 2O[Wb hc\ÉQVab SW\[OZ ^`OYbWaQV USºPb eS`RS\ YO\\ eWS [O\ [Wb E`O^^S`YZOaaS\ O`PSWbSb hSWUb ROa >`]U`O[[ FaP__Ta  eWS SW\S UO\hS HOVZ OZa =PXSYb S`hScUb c\R dS`O`PSWbSb eW`R ?a^VaP\\ FaP__Ta ) 6P]iiPW[ P[b TX]UPRWTa 3PcT]ch_ d]S P[b ATUTaT]ich_ class Wrapper01 { public static void main(String[] args) int zahl1 = 15; // Integer zahl1 = new Integer(15); System.out.println(zahl1); } }

{

!#&

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

$$ Ch_D\fP]S[d]V ifXbRWT] TX]UPRWT] d]S ATUTaT]ich_T]

ÎQd]V id\ ?a^VaP\\ FaP__Ta 3`aSbhS\ AWS RWS 2STW\WbW]\ RSa SW\TOQVS\ Bg^a W\ RS` HSWZS ! Rc`QV RWS UZSWQVeS`bWUS 2STW\WbW]\ W\ HSWZS " c\R bSabS\ AWS ROa 3`USP\Wa Ò\RS`b aWQV ROa 3`USP\Wa- HcaO[[S\TOaac\U( 3W\S 9]\dS`bWS`c\U heWaQVS\ @STS`S\hbg^ c\R SW\TOQVS[ Bg^ Wab W\ 8OdO \WQVb [rUZWQV E]VZ [rUZWQV Wab ROa 3W\^OQYS\ P]fW\U d]\ SW\TOQVS\ Bg ^S\ W\ ST] T]cb_aTRWT]ST] Ch_ RS` ROhcUSVr`S\RS\ E`O^^S`YZOaaS Phe ROa /ca^OQYS\ c\P]fW\U d]\ @STS`S\hbg^S\ c[ eWSRS` SW\TOQVS Bg^S\ hc PSY][ [S\



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2Oa 3W\ ]RS` /ca^OQYS\ S`T]ZUb W[[S` RO\\ Ocb][ObWaQV eS\\ 8OdO S`YS\\b ROaa RWSa \]beS\RWU c\R [rUZWQV Wab 0SWa^WSZ( ES\\ ^`W[WbWdS Bg^S\ O\ RWS ;SbV]RS _aX]cU ºPS`USPS\ eS`RS\ RO\\ eS`RS\ RWSaS SW\TOQVS\ Bg^S\ W\ =PXSYbS RS` XSeSW ZWUS\ 9ZOaaS c[USeO\RSZb aWS eS`RS\ SW\US^OQYb W\ SW\S 0]f OcT S\UZWaQV( Oc b]P]fW\U ]RS` Ocb]e`O^^W\U /cQV RS` c[USYSV`bS D]`UO\U ROa 3\b^OQYS\ ] RS` c\P]fW\U YO\\ S`T]ZUS\ ]V\S ROaa RS` >`]U`O[[WS`S` ROTº` PSa]\RS`S D]` YSV`c\US\ b`STTS\ [caa ?a^VaP\\ 1^gX]V ) 0dc^\PcXbRWTb 1^gX]VD]Q^gX]V

class Boxing01 { public static void main(String[] args) int zahl1 = 15; Integer zahl2 = new Integer(25); System.out.println(zahl1 + zahl2); zahl1 = zahl2; System.out.println(zahl1); } }



{

// Autoboxing // Auto-Unboxing

1UT\KXZOKXKTSOZYVK`OKRRKT3KZNUJKT

EWS PS`SWba [SV`TOQV PSb]\b PWSbSb RWS 8OdOA^`OQVS YSW\S ;rUZWQVYSWb c[ [Wb SW \S[ 1OabW\U=^S`Ob]` heWaQVS\ SW\TOQVS\ c\R @STS`S\hbg^S\ hc Y]\dS`bWS`S\ /PS` Sa UWPb ;SbV]RS\ hc[ C[eO\RSZ\ d]\ Ab`W\U]PXSYbS\ W\ ^`W[WbWdS Bg^S\ c\R OcQV ;SbV]RS\ c[ SW\TOQVS Bg^S\ W\ Ab`W\U]PXSYbS hc Y]\dS`bWS`S\ D\fP]ST[] e^] TX]UPRWT] Ch_T] X] BcaX]V^QYTZcT 2WS E`O^^S`YZOaaS\ S\bVOZbS\ SW\S c^BcaX]V;SbV]RS RWS SW\S Ab`W\U@S^`ÉaS\bObW]\ Tº` SW\S\ SW\TOQVS\ 2ObS\bg^ ZWSTS`b EW` eWaaS\ OcQV PS`SWba ROaa c^BcaX]V d]\ PS abW[[bS\ ;SbV]RS\ Ocb][ObWaQV OcTUS`cTS\ eW`R  a] h0 d]\ RS` _aX]c[];SbV]RS !#'

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

$ Ch_d\fP]S[d]VT] eTabcTWT] RPbcX]V

?a^VaP\\ :^]eTac
{

D\fP]ST[] e^] BcaX]V X] TX]UPRWT Ch_T] 4º` RS\ c[USYSV`bS\ ESU \É[ZWQV ROa Hc`ºQYTºV`S\ SW\Sa Ab`W\U]PXSYba W\ SW\S\ ^`W[WbWdS\ 2ObS\bg^ UWPb Sa [SV`S`S ;rUZWQVYSWbS\( •

S\beSRS` eW`R SW\S ;SbV]RS RS` S\ba^`SQVS\RS\ E`O^^S`YZOaaS OcTUS`cTS\

•

]RS` Sa eW`R SW\S ;SbV]RS SW\S` Ab`W\UYZOaaS BcaX]V BcaX]V1dU ]RS` BcaX]V1dX[ STa

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{

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{

8SRS E`O^^S`YZOaaS S\bVÉZb RWS S\ba^`SQVS\RS ^O`aSFFF;SbV]RS hc[ >O`aS\ RSa Ab`W\Ua c[ RS\ XSeSWZWUS\ ^`W[WbWdS\ Bg^ RO`Oca hc S`hScUS\ ÎQd]V id\ ?a^VaP\\ :^]eTac
Ò\RS`\ AWS ROa >`]U`O[[ a] OP ROaa RS` BcaX]V W\ SW\S\ SW\TOQVS\ U[^PcBg^ c[ USeO\RSZb eW`R

!$

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

$$ Ch_D\fP]S[d]V ifXbRWT] TX]UPRWT] d]S ATUTaT]ich_T]

;»bd]Vbe^abRW[PV

class KonvertMethod04 { public static void main(String[] args) String str = "153E5"; float zahl = Float.parseFloat(str); System.out.println(zahl); } }

{

IdbP\\T]UPbbd]V >`W\hW^WSZZ Wab PSW[ /`PSWbS\ [Wb DO`WOPZS\ RS` d][ >`]U`O[[WS`S` W\ RS` 2SYZO`ObW ]\ TSabUSZSUbS 2ObS\bg^ ab`S\U SW\hcVOZbS\ 2WSa eW`R d][ 1][^WZS` ºPS`^`ºTb c\R aWQVS`USabSZZb >`W\hW^WSZZ Yr\\S\ HceSWac\US\ ]RS` >O`O[SbS`ºPS`UOPS\ \c` Rc`QV USTºV`b eS`RS\ eS\\ RWS 2ObS\bg^S\ SfOYb ºPS`SW\abW[[S\ AbW[[S\ 2ObS\bg^ d]\ AS\RS` c\R 3[^TÉ\US` \WQVb ºPS`SW\ a] YO\\ W\ PSabW[[bS\ 4ÉZZS\ SW\S Ocb] [ObWaQVS 2ObS\bg^/\^Oaac\U S`T]ZUS\ 2Oa USaQVWSVb OPS` \c` eS\\ RWS 9]\dS`aW ]\ ]V\S 5STOV`S\ d]\ 7\T]`[ObW]\adS`Zcab ]RS` TÉZaQVc\U [rUZWQV Wab C\R ROTº` UWPb Sa ab`S\US @SUSZ\( •

PSW SW\TOQVS\ Bg^S\( C[eO\RZc\U \c` d]\ YZSW\ \OQV U`]z

•

PSW @STS`S\hbg^S\( C[eO\RZc\U \c` d]\ a^ShWSZZ OcT OZZUS[SW\

2WSaS ab`S\US Bg^WaWS`c\U W\ 8OdO YO\\ OZZS`RW\Ua [Wb SW\WUS\ A^`OQV[WbbSZ\ OcTUS eSWQVb eS`RS\ A] UWPb Sa RS\ Bg^1Oab RO[Wb YO\\ RS` >`]U`O[[WS`S` ROa 1OabW\U Rc`QV Sf^ZWhWbS /\UOPS SW\S C[W\bS`^`SbObW]\ SW\Sa 2ObS\eS`bSa S`heW\US\ 7\ RS\ [SWabS\ 4ÉZZS\ eW`R Sa aWQV ROPSW c[ SW\aQV`É\YS\RS Phe a^ShWOZWaWS`S\RS 9]\dS` aW]\S\ VO\RSZ\ ESWZ Sa ROPSW hc @c\BW[S4SVZS`\ Y][[S\ YO\\ eW`R R`W\US\R S[^T]VZS\ RO[Wb d]`aWQVbWU c[hcUSVS\ c\R d]` RWSaS` /`b RS` C[eO\RZc\U X\\Ta SW\S Bg^^`ºTc\U d]`hc\SV[S\ [Wb X]bcP]RT^U 2WS DS`O\be]`bc\U ZWSUb OZZSW\ PSW[ >`]U`O[[WS`S` RS` 1][^WZS` YO\\ RO\\ \WQVb [SV` VSZTS\ 2SaeSUS\ [caa ab`S\U c\bS`aQVWSRS\ eS`RS\ heWaQVS\ W[^ZWhWbS` Bg^Y]\dS`aW]\ RWS Ocb][ObWaQV S`T]ZUb eSWZ aWS ^`]P ZS[Z]a Wab c\R RS[ Sf^ZWhWbS\ 1OabW\U PSW RS[ RS` >`]U`O[[WS`S` W\ 9OcT \W[[b ROaa 2ObS\ dS`TÉZaQVb eS`RS\ Yr\\S\ 2O`ºPS` VW\Oca UWPb Sa a^ShWSZZS ;SbV]RS\ eS\\ heWaQVS\ SW\TOQVS\ Bg^S\ c\R Ab`W\U]PXSYbS\ Y]\dS`bWS`b eS`RS\ a]ZZ 3W\S PSa]\RS`S /`b RS` C[eO\RZc\U Wab ROa /cb]0]fW\U Phe /cb]C\P]fW\U 2O` c\bS` dS`abSVb [O\ RWS Ocb][ObWaQVS C[eO\RZc\U SW\Sa ^`W[WbWdS\ Bg^a W\ SW\S\ @STS`S\hbg^ Phe ROa /ca^OQYS\ SW\Sa =PXSYba W\ SW\S\ 0OaWabg^

!$

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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Stand: 22.12.2005 13:39:00 ))

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// Membervariable

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{

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

%" FT[RWT] 0]UP]VbfTac WPQT] SXT EPaXPQ[T].

3W\S 0Sa]\RS`VSWb W[ :SPS\ SW\S` DO`WOPZS\ Wab SW\S AWbcObW]\ e] aWS bS[^]`É` dS` RSQYb eW`R d]\ SW\S` O\RS`S\ UZSWQV\O[WUS\ DO`WOPZS\ B`]bhRS[ YO\\ aWS O\US a^`]QVS\ c\R dS`O`PSWbSb eS`RS\ ?a^VaP\\ BWPS^f ) ÎQTaSTRZT] TX]Ta EPaXPQ[T] class Shadow01 { static int z1 = 100; // Member-V. public static void main(String[] a) { int z1 = 2; // Lokale V. System.out.println(z1); } } ÎQd]V id\ ?a^VaP\\ BWPS^f ÎQd]V ( 0WbbS ºPS`ZSUS\ AWS eWS W\ RS` \PX];SbV]RS OcT RWS ;S[PS`dO`WOPZS i hcUSU`WTTS\ eS`RS\ YO\\ c\R bSabS\ AWS RWS :rac\U :rac\UaVW\eSWa( 2O Sa aWQV c[ SW\S bcPcXRDO`WOPZS VO\RSZb eW`R aWS _cOZWTWhWS`b [Wb RS[ 9ZOaaS\\O[S\ ÎQd]V !) 0WbbS ^`ºTS\ AWS Rc`QV >`]U`O[[É\RS`c\U ]P RS`aSZPS


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!$#

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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D]\ RWSaS` U`c\RaÉbhZWQVS\ @SUSZ hc[ 7\WbWOZWaWS`S\ UWPb Sa XSR]QV SW\S /ca\OV[S( :]YOZS DO`WOPZS\ eS`RS\ \WQVb Ocb][ObWaQV W\WbWOZWaWS`b ROa Wab /cTUOPS RSa >`] U`O[[WS`S`a 2WSa Wab OcQV aW\\d]ZZ c[ TSVZS`VOTbS D]`PSZSUc\US\ hc dS`[SWRS\ RS\\ Z]YOZS DO`WOPZS\ eS`RS\ VÉcTWU bS[^]`É` OZa HeWaQVS\a^SWQVS` PS\rbWUb ?a^VaP\\ 8]Xc!) ;^ZP[T EPaXPQ[T] \¶bbT] _Ta 7P]S X]XcXP[XbXTac fTaST] public class Init02 { public static void main(String[] args) { String str; System.out.println(str); } } ÎQd]V id\ ?a^VaP\\ 8]Xc! 2Oa >`]U`O[[ YO\\ \WQVb TSVZS`T`SW c[USeO\RSZb eS`RS\ 9]``WUWS`S\ AWS RWSaS\ 4SVZS`



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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

%# ;TQT]bSPdTa e^] EPaXPQ[T]

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public class MethodParm01 { public static void main(String[] a) { MethodParm01 m = new MethodParm01(); m.methodA(17); // System.out.println(zahl); // existiert nicht mehr! } void methodA(int zahl) { System.out.println(zahl++); } } 7[ >`]U`O[[ O`O[SbS` d]\ RS` ;SbV]RS \TcW^S0 RSYZO`WS`b 2S` DS`acQV d]\ OczS`VOZP RWSaS` ;SbV]RS OcT RWS DO`WOPZS iPW[ hchcU`SWTS\ TºV`b hc SW\S[ C[eO\RZc\UaTSVZS` 2SaeSUS\ Wab RWS HSWZS # OZa 9][[S\bO` USaQV`WSPS\ e]`RS\ ÎQd]V id\ ?a^VaP\\ `]U`O[[ a] ROaa RS` USeº\aQVbS 3TTSYb S`hWSZb eW`R :r ac\UaVW\eSWa( 2S` ES`b RSa >O`O[SbS`a [caa OZa 3`USP\Wa d]\ RS` OcTUS`cTS\S\ ;S bV]RS hc`ºQYUSUSPS\ eS`RS\ c\R PSW[ /cT`cT S[^TO\US\ eS`RS\ !$%

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Stand: 22.12.2005 13:39:00 ))

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class Static01 { static int zahl; static String text; } class StaticTest01 { public static void main(String[] a) { System.out.println(Static01.zahl + Static01.text); } } ÎQd]V id\ ?a^VaP\\ BcPcXRCTbc 0WbbS YZÉ`S\ AWS Rc`QV >`]U`O[[É\RS`c\U RWS 4`OUS ]P RWS \PX];SbV]RS OcQV W\ \S`VOZP RS` 9ZOaaS BcPcXR abSVS\ Yr\\bS EWS É\RS`b aWQV RO\\ RWS /`b RS` /R`Sa aWS`c\U d]\ iPW[ c\R cTgc. !$&

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

%# ;TQT]bSPdTa e^] EPaXPQ[T]

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class Instanz01 { int zahl; String text; Instanz01() {}; Instanz01(int z, String t) { zahl = z; text = t; } } class InstanzTest01 { public static void main(String[] a) { Instanz01 instanz1 = new Instanz01(17,"ABC"); Instanz01 instanz2 = new Instanz01(25,"XYZ"); System.out.println(instanz1.zahl + instanz1.text); } } 2WS C[eO\RZc\UaSW\VSWb ?cSZZbSfbRObSW [caa 8]bcP]iCTbc YPeP VSWzS\ 3W\ BSab RSa >`]U`O[[a RS[]\ab`WS`b ROaa SW\ AObh ;S[PS`dO`WOPZS\ ^`] =PXSYb O\USZSUb eW`R /czS`RS[ hSWUb Sa eWS RWS SW\hSZ\S\ DO`WOPZS\ `STS`S\hWS`b eS`RS\ ÎQd]V id\ ?a^VaP\\ 8]bcP]iCTbc 0WbbS É\RS`\ AWS ROa >`]U`O[[ a] ROaa RWS S`abS 7\abO\h RWS ES`bS "%# c\R 0SW a^WSZbSfb S\bVÉZb c\R Tº` RWS heSWbS 7\abO\h RS` 2STOcZb9]\ab`cYb]` OcTUS`cTS\ eW`R

!$'

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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class Zugriff01 { int zahl1; void setZahl1(int z3) { zahl1 = z3; } void ausgeben() { System.out.println(zahl1); } }

// Nicht private!

public class ZugriffTest01 { public static void main(String[] a) { Zugriff01 z01 = new Zugriff01(); z01.setZahl1(15); z01.ausgeben(); System.out.println(z01.zahl1); // Direktaufruf } } 2WS ;S[PS`dO`WOPZS iPW[ Wab SW\ 3ZS[S\b RS` 9ZOaaS IdVaXUU  AWS Wab ]XRWc Oca R`ºQYZWQV OZa _aXePcT RSYZO`WS`b 2SaeSUS\ UWZb RWS AbO\RO`R`SUSZ( 8SRS O\RS`S 9ZOaaS W\ RWSaS[ >OYSb YO\\ OcT RWSaSa 3ZS[S\b hcU`SWTS\ c\R Sa OcQV dS`É\RS`\ 2S` HcU`WTT S`T]ZUb O\RS`a OZa W\\S`VOZP SW\S` 9ZOaaS \c\ _cOZWTWhWS`b R V [Wb 6WZTS RSa >c\Yb=^S`Ob]`a X]bcP]i]P\TUT[S]P\T ÎQd]VT] id\ ?a^VaP\\ IdVaXUU ÎQd]V ( 1]RWS`S\ AWS Tº` RWS ;S[PS`dO`WOPZS iPW[ RS\ HcU`WTTa[]RWTWS` _aXePcT ROa S \WQVb dS`USaaS\ RS\\ _aXePcT Wab YSW\ RScbaQVSa E]`b DS`acQVS\ AWS SW\S C[eO\RZc\U RS` C[eO\RZc\UaSW\VSWb IdVaXUUCTbc YPeP 3`USP\Wa( Sa eW`R SW\ C[eO\RZc\UaTSVZS` OcaUSUSPS\ :raQVS\ AWS RO\OQV RS\ ;]RWTWS` _aXePcT eWSRS` ÎQd]V !( 3`UÉ\hS\ AWS RWS 9ZOaaS IdVaXUUCTbc c[ T]ZUS\RS /cTUOPS( 3a a]ZZ SW\S heSWbS 7\abO\h i! RS` 9ZOaaS IdVaXUU S`hScUb eS`RS\ 2WS ;S[PS`dO`WOPZS iPW[ a]ZZ RS\ ES`b % PSY][[S\ 2O\OQV a]ZZ RWS ;SbV]RS _aX]c[] OcTUS`cTS\ eS`RS\ RWS RW`SYb RWS ;S[PS`dO`WOPZS iPW[ `STS`S\hWS`b OZZS`RW\Ua Tº` RWS 7\abO\h i! 2WSaS ÍPc\U VOb cO UShSWUb ROaa d]\ RS` AbO\RO`R`SUSZ Tº` ROa HcU`WTTa`SQVb OP USeWQVS\ eS`RS\ YO\\ W\RS[ a] US\O\\bS HcU`WTTa[]RWTWS` h0 _aXePcT PS\cbhb eS`RS\ 0Sd]` eW` XSR]QV RSbOWZZWS`b RWS SW\hSZ\S\ AQVZºaaSZer`bS` Tº` RWS HcU`WTTa`SQVbS PS a^`SQVS\ [ºaaS\ eW` RWS 4`OUS YZÉ`S\ eOa c\bS` SW\S[ >OYSb hc dS`abSVS\ Wab c\R eSZQVS @]ZZS SW\ >OQYOUS Tº` ROa HcU`WTTa`SQVb a^WSZb !%

(( merker2.doc

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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?a^VaP\\ IdVaXUU!) 0aQTXcT] \Xc ?PRZPVT]P\T] package merker; class Zugriff02 { int zahl1; void setZahl1(int z3) { zahl1 = z3; } void ausgeben() { System.out.println(zahl1); } } 2c`QV RWS >OQYOUSO\UOPS W\ RS` S`abS\ HSWZS RWSaS` 2ObSW eW`R RWS 9ZOaaS hc[ 0S abO\RbSWZ SW\Sa >OYSba \É[ZWQV hc[ 3ZS[S\b RSa >OYSba \TaZTa 2S` >OQYOUS`]U`O[[ IdVaXUU! [Wb RS[ /cT `cT RSa 1][^WZS`a Oca RWSaS` 1][[O\RZW\S c[ c\R \WQVb Oca SW\S` 3\beWQYZc\Ua c[USPc\U ÍPS`^`ºTS\ AWS W\ eSZQVS[ =`R\S` aWQV RWS S`hScUbS 1ZOaaRObSW [Wb RS[ 0gbSQ]RS PSTW\RSb A^SWQVS`\ AWS RWS \OQVT]ZUS\RS 2ObSW W\ RS` @]]b2W`SQb]`g RSa =`R\S`a \TaZTa OP OZa] \WQVb W\ RS[aSZPS\ =`R\S` eWS RWS 1ZOaa2ObSW IdVaXUU!YPeP a]\RS`\ W\ RS[ ºPS`US]`R\SbS\ 4]ZRS` ?a^VaP\\ IdVaXUUCTbc!) 1T]dciT] STa :[PbbT TX]Tb ?PZTcb import merker.*; public class ZugriffTest02 { public static void main(String[] a) { Zugriff02 z1 = new Zugriff02(); z1.setZahl1(15); z1.ausgeben(); } } 2c`QV RWS /\UOPS W\ RS` S`abS\ HSWZS RWSaS` 2ObSW YO\\ RWSaSa >`]U`O[[ OcT RWS 1ZOaa4WZS \TaZTaIdVaXUU! hcU`SWTS\ ]V\S W[[S` eWSRS` RS\ >OQYOUS\O[S\ [Wb O\hcUSPS\ /ZbS`\ObWd YO\\ RWSaS /\UOPS OcQV S\bTOZZS\ RO\\ [ºaabS RWS 3`hSc Uc\U RS` 7\abO\h W\ RS` dWS`bS\ HSWZS ZOcbS\( merker.Zugriff02 z1 = new merker.Zugriff02();

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

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(( merker2.doc

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public class PublicTest01 { public static void main(String[] a) { Public01 p = new Public01(); } } public class Public01 { private int zahl1; void setZahl1(int z3) { zahl1 = z3; !%%

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BNF-Beispiel - Variablendeklaration: VariableDeclarators: VariableDeclarator { ,

VariableDeclarator }

VariableDeclarator: Identifier VariableDeclaratorRest VariableDeclaratorRest: BracketsOpt [ =

VariableInitializer]

Kurzbeschreibung für Control-Statements: if (Expression) Statement [else Statement] for ( ForInitOpt

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[Expression] ; ForUpdateOpt ) Statement

while (Expression) Statement do Statement while (Expression)

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Ausführliche Beschreibung (Switch): switch (Expression) { SwitchBlockStatementGroups } SwitchBlockStatementGroups: { SwitchBlockStatementGroup } SwitchBlockStatementGroup: SwitchLabel BlockStatements SwitchLabel: case ConstantExpression : default: BlockStatements: { BlockStatement } BlockStatement : LocalVariableDeclarationStatement ClassOrInterfaceDeclaration [Identifier :] Statement

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COMMERCIAL AT LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LATIN CAPITAL LETTER LEFT SQUARE BRACKET REVERSE SOLIDUS RIGHT SQUARE BRACKET CIRCUMFLEX ACCENT LOW LINE

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

2 3XT TabcT] !$% D]XR^STITXRWT] UUUU



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0x0080

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129 130

0x0081 0x0082

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131 132

0x0083 0x0084

133 134

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EW\R]ea

2 = A

80

80

Ç

81

ü

€

82

‚

82

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NO BREAK HERE* *

83

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83

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84

„

84

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NEXT LINE (NEL)* START OF SELECTED AREA*

85

…

85

à

86

†

86

å

135 136

0x0087 0x0088

END OF SELECTED AREA* TABULATION SET*

87

‡

87

ç

88

ˆ

88

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137

0x0089

TABULATION WITH JUST.*

89

‰

89

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138 139

0x008A 0x008B

LINE TABULATION SET* PARTIAL LINE FORWARD*

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Š

8A

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140 141

0x008C 0x008D

PARTIAL LINE BACKWARD* REVERSE LINE FEED*

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142 143

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144 145

0x0090 0x0091

DEVICE CONTROL STRING* PRIVATE USE ONE*

91

146 147

0x0092 0x0093

PRIVATE USE TWO* SET TRANSMIT STATE*

92

148 149

0x0094 0x0095

150 151

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90

É

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91

æ

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92

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93

“

93

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CANCEL CHARACTER* MESSAGE WAITING*

94

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94

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95

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0x0096 0x0097

START OF GUARDED AREA* END OF GUARDED AREA*

96

–

96

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97

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97

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152

0x0098

START OF STRING*

98

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98

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153 154

0x0099 0x009A

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155 156 157 158

0x009B 0x009C 0x009D 0x009E

CONTROL SEQUENCE INTR.* STRING TERMINATOR* OPERATING SYSTEM CM* PRIVACY MESSAGE*

9A 9B

š ›

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Ü ø

9C

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

2

3XT TabcT] !$% D]XR^STITXRWT] UUUU

1]RS ^]W\b RSh 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191

VSfO RSh 0x00A0 0x00A1 0x00A2 0x00A3 0x00A4 0x00A5 0x00A6 0x00A7 0x00A8 0x00A9 0x00AA 0x00AB 0x00AC 0x00AD 0x00AE 0x00AF 0x00B0 0x00B1 0x00B2 0x00B3 0x00B4 0x00B5 0x00B6 0x00B7 0x00B8 0x00B9 0x00BA 0x00BB 0x00BC 0x00BD 0x00BE 0x00BF

Ag[ P]Z D]XR^ST
¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ ® ¯ ° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿

NO-BREAK SPACE INVERTED EXCLAM. MARK CENT SIGN POUND SIGN CURRENCY SIGN YEN SIGN BROKEN BAR SECTION SIGN DIAERESIS COPYRIGHT SIGN FEMININE ORDINAL INDICATOR LEFT-POINTING DOUBLE ANGLE NOT SIGN SOFT HYPHEN REGISTERED SIGN MACRON DEGREE SIGN PLUS-MINUS SIGN SUPERSCRIPT TWO SUPERSCRIPT THREE ACUTE ACCENT MICRO SIGN PILCROW SIGN MIDDLE DOT CEDILLA SUPERSCRIPT ONE MASCULINE ORDINAL INDICATOR RIGHT-POINTING DOUBLE ANGLE ONE QUARTER ONE HALF THREE QUARTERS INVERTED QUESTION MARK

2? !$!

2? '$

EW\R]ea

2 = A

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF

¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ ® ¯ ° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿

á í ó ú ñ Ñ ª º ¿ ® ¬ ½ ¼ ¡ « » ų Ŵ ŵ Ň ō Á  À © Ť Œ Ř Ş ¢ ¥ ʼn

BSWZ $ d]\ &( 1]RS^]W\b $'( C\WQ]RS 1> # c\R &&#' WRS\bWaQV 1>&# VOb OPeSWQVS\RS 0SZSUc\U

!'

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

2 3XT TabcT] !$% D]XR^STITXRWT] UUUU

1]RS ^]W\b RShW[ 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223

VSfO RSh

Ag[ P]Z D]XR^ST
0x00C0 0x00C1 0x00C2 0x00C3 0x00C4 0x00C5 0x00C6 0x00C7 0x00C8 0x00C9 0x00CA 0x00CB 0x00CC 0x00CD 0x00CE 0x00CF 0x00D0 0x00D1 0x00D2 0x00D3 0x00D4 0x00D5 0x00D6 0x00D7 0x00D8 0x00D9 0x00DA 0x00DB 0x00DC 0x00DD 0x00DE 0x00DF

À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß

A WITH GRAVE A WITH ACUTE A WITH CIRCUMFLEX A WITH TILDE A WITH DIAERESIS A WITH RING ABOVE LETTER AE C WITH CEDILLA E WITH GRAVE E WITH ACUTE E WITH CIRCUMFLEX WITH DIAERESIS I WITH GRAVE I WITH ACUTE I WITH CIRCUMFLEX I WITH DIAERESIS LETTER ETH N WITH TILDE O WITH GRAVE O WITH ACUTE O WITH CIRCUMFLEX O WITH TILDE O WITH DIAERESIS MULTIPLICATION SIGN O WITH STROKE U WITH GRAVE U WITH ACUTE U WITH CIRCUMFLEX U WITH DIAERESIS Y WITH ACUTE LETTER THORN SMALL LETTER SHARP S

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2? '$

EW\R]ea

2 = A

C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF

C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF

À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß

BSWZ % d]\ &( 1]RS^]W\b '  !( C\WQ]RS 1> # c\R &&#' WRS\bWaQV 1>&# VOb OPeSWQVS\RS 0SZSUc\U

!'

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

Ŋ ŏ Ŏ Ō ņ Ő ã Ã ś ŕ Ū ŧ š ő ŭ ¤ ð Ð Ê Ë È ı Í Î Ï ŋ ň Ű ů ¦ Ì Ů

2

3XT TabcT] !$% D]XR^STITXRWT] UUUU

1]RS ^]W\b RShW[ 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255

VSfO RSh 0x00E0 0x00E1 0x00E2 0x00E3 0x00E4 0x00E5 0x00E6 0x00E7 0x00E8 0x00E9 0x00EA 0x00EB 0x00EC 0x00ED 0x00EE 0x00EF 0x00F0 0x00F1 0x00F2 0x00F3 0x00F4 0x00F5 0x00F6 0x00F7 0x00F8 0x00F9 0x00FA 0x00FB 0x00FC 0x00FD 0x00FE 0x00FF

Ag[ P]Z D]XR^ST
a WITH GRAVE a WITH ACUTE a WITH CIRCUMFLEX a WITH TILDE a WITH DIAERESIS a WITH RING ABOVE LETTER AE c WITH CEDILLA e WITH GRAVE e WITH ACUTE e WITH CIRCUMFLEX e WITH DIAERESIS i WITH GRAVE i WITH ACUTE i WITH CIRCUMFLEX i WITH DIAERESIS LETTER ETH n WITH TILDE o WITH GRAVE o WITH ACUTE o WITH CIRCUMFLEX o WITH TILDE o WITH DIAERESIS DIVISION SIGN o WITH STROKE u WITH GRAVE u WITH ACUTE u WITH CIRCUMFLEX u WITH DIAERESIS y WITH ACUTE LETTER THORN y WITH DIAERESIS

2? !$!

2? '$

EW\R]ea

2 = A

E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF

E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF

à á â ã ä å æ ç è é ê ë ì í î ï ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ

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!'!

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

3 :^\_[TccQTXb_XT[ TX]Ta eTacTX[cT] 0__[XRPcX^]

*

1USVRKZZHKOYVOKRKOTKX\KXZKORZKT'VVROIGZOUT

2Oa 9O^WbSZ $! Ab`SO[a S\bVÉZb T]ZUS\RSa 0SWa^WSZ^`]U`O[[ hc[ AQV`SWPS\ c\R :SaS\ ºPS` SW\S B1>7>:SWbc\U ?a^VaP\\ BcaTP\#) BTaeTa U¶a :^\\d]XZPcX^] ¶QTa C2?8?ETaQX]Sd]V import java.net.*; import java.io.*; class Stream04 { public static void main(String[] args) throws Exception ServerSocket ss = new ServerSocket(1500); Socket s = ss.accept();

{

DataInputStream ein = new DataInputStream(s.getInputStream()); int zahl = ein.read(); System.out.println(zahl); } } Hc[ drZZWUS\ DS`abÉ\R\Wa aW\R SW\WUS 9S\\b\WaaS RSa B1>7>>`]b]Y]ZZa S`T]`RS`ZWQV 2Oa >`]U`O[[ S`eO`bSb ºPS` RWS >]`b<` # SW\ HSWQVS\ ROa USZSaS\ c\R RO\OQV O[ 1]\a]ZSPWZRaQVW`[ OcaUSUSPS\ eW`R 6WS` Wab ROa S\ba^`SQVS\RS AS\RS`^`] U`O[[ ?a^VaP\\ BcaTP\#P) 2[XT]c U¶a :^\\d]XZPcX^] ¶QTa C2?8?ETaQX]Sd]V import java.net.*; import java.io.*; class Stream04a { public static void main(String[] args) throws Exception { Socket s = new Socket("localhost",1500); DataOutputStream aus = new DataOutputStream(s.getOutputStream()); aus.write('A'); aus.close(); } } !'"

3 :^\_[TccQTXb_XT[ TX]Ta eTacTX[cT] 0__[XRPcX^]

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2Oa 3`USP\Wa RS` ec\RS`d]ZZS\ HcaO[[S\O`PSWb RWSaS` PSWRS\ >`]U`O[[S Wab ROaa OcT RS[ 1]\a]ZSPWZRaQVW`[ RSa AS`dS`^`]U`O[[a RS` 1]RS^]W\b RSa 0cQVabOPS\a / OcaUSUSPS\ eW`R ÎQd]V id\ ?a^VaP\\ BcaTP\# ÎQd]V ( Ò\RS`\ AWS ROa >`]U`O[[ a] ROaa \WQVb RS` 1]RS^]W\b $# a]\RS`\ RS` 0cQVabOPS / d][ AS`dS`^`]U`O[[ OcaUSUSPS\ eW`R ^`W\bZ\RWPahOVZ) ÎQd]V !) Ò\RS`\ AWS RWS PSWRS\ 9][[c\WYObW]\a^`]U`O[[S a] OP ROaa \WQVb SW\ hSZ\S HSWQVS\ USaS\RSb c\R USZSaS\ eS`RS\ a]\RS`\ Y][^ZSbbS HSWQVS\YSbbS\ Ab`W\Ua [Wb RS\ ;SbV]RS\ e`WbSCB4 c\R `SORCB4 OcaUSbOcaQVb eS`RS\ ;»bd]Vbe^abRW[PV import java.net.*; import java.io.*; class Stream05 { public static void main(String[] args) throws Exception { ServerSocket ss = new ServerSocket(1500); Socket s = ss.accept(); DataInputStream ein = new DataInputStream(s.getInputStream()); String text = ein.readUTF(); System.out.println(text); } } import java.net.*; import java.io.*; class Stream05a { public static void main(String[] args) throws Exception { Socket s = new Socket("localhost",1500); DataOutputStream aus = new DataOutputStream(s.getOutputStream()); aus.writeUTF("Hallo"); aus.close(); } }

!'#

(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

4 6[^bbPa

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(( merker2.doc

Stand: 22.12.2005 13:39:00 ))

4 6[^bbPa

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